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f-stack/freebsd/contrib/dev/acpica/components/namespace/nsconvert.c

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/******************************************************************************
*
* Module Name: nsconvert - Object conversions for objects returned by
* predefined methods
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2020, 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.
*
*****************************************************************************
*
* Alternatively, you may choose to be licensed under the terms of the
* following license:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, you may choose to be licensed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
*****************************************************************************/
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acinterp.h>
#include <contrib/dev/acpica/include/acpredef.h>
#include <contrib/dev/acpica/include/amlresrc.h>
#define _COMPONENT ACPI_NAMESPACE
ACPI_MODULE_NAME ("nsconvert")
/*******************************************************************************
*
* FUNCTION: AcpiNsConvertToInteger
*
* PARAMETERS: OriginalObject - Object to be converted
* ReturnObject - Where the new converted object is returned
*
* RETURN: Status. AE_OK if conversion was successful.
*
* DESCRIPTION: Attempt to convert a String/Buffer object to an Integer.
*
******************************************************************************/
ACPI_STATUS
AcpiNsConvertToInteger (
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
ACPI_STATUS Status;
UINT64 Value = 0;
UINT32 i;
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_STRING:
/* String-to-Integer conversion */
Status = AcpiUtStrtoul64 (OriginalObject->String.Pointer, &Value);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
case ACPI_TYPE_BUFFER:
/* Buffer-to-Integer conversion. Max buffer size is 64 bits. */
if (OriginalObject->Buffer.Length > 8)
{
return (AE_AML_OPERAND_TYPE);
}
/* Extract each buffer byte to create the integer */
for (i = 0; i < OriginalObject->Buffer.Length; i++)
{
Value |= ((UINT64)
OriginalObject->Buffer.Pointer[i] << (i * 8));
}
break;
default:
return (AE_AML_OPERAND_TYPE);
}
NewObject = AcpiUtCreateIntegerObject (Value);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
*ReturnObject = NewObject;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsConvertToString
*
* PARAMETERS: OriginalObject - Object to be converted
* ReturnObject - Where the new converted object is returned
*
* RETURN: Status. AE_OK if conversion was successful.
*
* DESCRIPTION: Attempt to convert a Integer/Buffer object to a String.
*
******************************************************************************/
ACPI_STATUS
AcpiNsConvertToString (
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
ACPI_SIZE Length;
ACPI_STATUS Status;
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Integer-to-String conversion. Commonly, convert
* an integer of value 0 to a NULL string. The last element of
* _BIF and _BIX packages occasionally need this fix.
*/
if (OriginalObject->Integer.Value == 0)
{
/* Allocate a new NULL string object */
NewObject = AcpiUtCreateStringObject (0);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
}
else
{
Status = AcpiExConvertToString (OriginalObject,
&NewObject, ACPI_IMPLICIT_CONVERT_HEX);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
break;
case ACPI_TYPE_BUFFER:
/*
* Buffer-to-String conversion. Use a ToString
* conversion, no transform performed on the buffer data. The best
* example of this is the _BIF method, where the string data from
* the battery is often (incorrectly) returned as buffer object(s).
*/
Length = 0;
while ((Length < OriginalObject->Buffer.Length) &&
(OriginalObject->Buffer.Pointer[Length]))
{
Length++;
}
/* Allocate a new string object */
NewObject = AcpiUtCreateStringObject (Length);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
/*
* Copy the raw buffer data with no transform. String is already NULL
* terminated at Length+1.
*/
memcpy (NewObject->String.Pointer,
OriginalObject->Buffer.Pointer, Length);
break;
default:
return (AE_AML_OPERAND_TYPE);
}
*ReturnObject = NewObject;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsConvertToBuffer
*
* PARAMETERS: OriginalObject - Object to be converted
* ReturnObject - Where the new converted object is returned
*
* RETURN: Status. AE_OK if conversion was successful.
*
* DESCRIPTION: Attempt to convert a Integer/String/Package object to a Buffer.
*
******************************************************************************/
ACPI_STATUS
AcpiNsConvertToBuffer (
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT **Elements;
UINT32 *DwordBuffer;
UINT32 Count;
UINT32 i;
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Integer-to-Buffer conversion.
* Convert the Integer to a packed-byte buffer. _MAT and other
* objects need this sometimes, if a read has been performed on a
* Field object that is less than or equal to the global integer
* size (32 or 64 bits).
*/
Status = AcpiExConvertToBuffer (OriginalObject, &NewObject);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
case ACPI_TYPE_STRING:
/* String-to-Buffer conversion. Simple data copy */
NewObject = AcpiUtCreateBufferObject
(OriginalObject->String.Length);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
memcpy (NewObject->Buffer.Pointer,
OriginalObject->String.Pointer, OriginalObject->String.Length);
break;
case ACPI_TYPE_PACKAGE:
/*
* This case is often seen for predefined names that must return a
* Buffer object with multiple DWORD integers within. For example,
* _FDE and _GTM. The Package can be converted to a Buffer.
*/
/* All elements of the Package must be integers */
Elements = OriginalObject->Package.Elements;
Count = OriginalObject->Package.Count;
for (i = 0; i < Count; i++)
{
if ((!*Elements) ||
((*Elements)->Common.Type != ACPI_TYPE_INTEGER))
{
return (AE_AML_OPERAND_TYPE);
}
Elements++;
}
/* Create the new buffer object to replace the Package */
NewObject = AcpiUtCreateBufferObject (ACPI_MUL_4 (Count));
if (!NewObject)
{
return (AE_NO_MEMORY);
}
/* Copy the package elements (integers) to the buffer as DWORDs */
Elements = OriginalObject->Package.Elements;
DwordBuffer = ACPI_CAST_PTR (UINT32, NewObject->Buffer.Pointer);
for (i = 0; i < Count; i++)
{
*DwordBuffer = (UINT32) (*Elements)->Integer.Value;
DwordBuffer++;
Elements++;
}
break;
default:
return (AE_AML_OPERAND_TYPE);
}
*ReturnObject = NewObject;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsConvertToUnicode
*
* PARAMETERS: Scope - Namespace node for the method/object
* OriginalObject - ASCII String Object to be converted
* ReturnObject - Where the new converted object is returned
*
* RETURN: Status. AE_OK if conversion was successful.
*
* DESCRIPTION: Attempt to convert a String object to a Unicode string Buffer.
*
******************************************************************************/
ACPI_STATUS
AcpiNsConvertToUnicode (
ACPI_NAMESPACE_NODE *Scope,
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
char *AsciiString;
UINT16 *UnicodeBuffer;
UINT32 UnicodeLength;
UINT32 i;
if (!OriginalObject)
{
return (AE_OK);
}
/* If a Buffer was returned, it must be at least two bytes long */
if (OriginalObject->Common.Type == ACPI_TYPE_BUFFER)
{
if (OriginalObject->Buffer.Length < 2)
{
return (AE_AML_OPERAND_VALUE);
}
*ReturnObject = NULL;
return (AE_OK);
}
/*
* The original object is an ASCII string. Convert this string to
* a unicode buffer.
*/
AsciiString = OriginalObject->String.Pointer;
UnicodeLength = (OriginalObject->String.Length * 2) + 2;
/* Create a new buffer object for the Unicode data */
NewObject = AcpiUtCreateBufferObject (UnicodeLength);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
UnicodeBuffer = ACPI_CAST_PTR (UINT16, NewObject->Buffer.Pointer);
/* Convert ASCII to Unicode */
for (i = 0; i < OriginalObject->String.Length; i++)
{
UnicodeBuffer[i] = (UINT16) AsciiString[i];
}
*ReturnObject = NewObject;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsConvertToResource
*
* PARAMETERS: Scope - Namespace node for the method/object
* OriginalObject - Object to be converted
* ReturnObject - Where the new converted object is returned
*
* RETURN: Status. AE_OK if conversion was successful
*
* DESCRIPTION: Attempt to convert a Integer object to a ResourceTemplate
* Buffer.
*
******************************************************************************/
ACPI_STATUS
AcpiNsConvertToResource (
ACPI_NAMESPACE_NODE *Scope,
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
UINT8 *Buffer;
/*
* We can fix the following cases for an expected resource template:
* 1. No return value (interpreter slack mode is disabled)
* 2. A "Return (Zero)" statement
* 3. A "Return empty buffer" statement
*
* We will return a buffer containing a single EndTag
* resource descriptor.
*/
if (OriginalObject)
{
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
/* We can only repair an Integer==0 */
if (OriginalObject->Integer.Value)
{
return (AE_AML_OPERAND_TYPE);
}
break;
case ACPI_TYPE_BUFFER:
if (OriginalObject->Buffer.Length)
{
/* Additional checks can be added in the future */
*ReturnObject = NULL;
return (AE_OK);
}
break;
case ACPI_TYPE_STRING:
default:
return (AE_AML_OPERAND_TYPE);
}
}
/* Create the new buffer object for the resource descriptor */
NewObject = AcpiUtCreateBufferObject (2);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
Buffer = ACPI_CAST_PTR (UINT8, NewObject->Buffer.Pointer);
/* Initialize the Buffer with a single EndTag descriptor */
Buffer[0] = (ACPI_RESOURCE_NAME_END_TAG | ASL_RDESC_END_TAG_SIZE);
Buffer[1] = 0x00;
*ReturnObject = NewObject;
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiNsConvertToReference
*
* PARAMETERS: Scope - Namespace node for the method/object
* OriginalObject - Object to be converted
* ReturnObject - Where the new converted object is returned
*
* RETURN: Status. AE_OK if conversion was successful
*
* DESCRIPTION: Attempt to convert a Integer object to a ObjectReference.
* Buffer.
*
******************************************************************************/
ACPI_STATUS
AcpiNsConvertToReference (
ACPI_NAMESPACE_NODE *Scope,
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject = NULL;
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_GENERIC_STATE ScopeInfo;
char *Name;
ACPI_FUNCTION_NAME (NsConvertToReference);
/* Convert path into internal presentation */
Status = AcpiNsInternalizeName (OriginalObject->String.Pointer, &Name);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Find the namespace node */
ScopeInfo.Scope.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Scope);
Status = AcpiNsLookup (&ScopeInfo, Name,
ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL, &Node);
if (ACPI_FAILURE (Status))
{
/* Check if we are resolving a named reference within a package */
ACPI_ERROR_NAMESPACE (&ScopeInfo,
OriginalObject->String.Pointer, Status);
goto ErrorExit;
}
/* Create and init a new internal ACPI object */
NewObject = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
if (!NewObject)
{
Status = AE_NO_MEMORY;
goto ErrorExit;
}
NewObject->Reference.Node = Node;
NewObject->Reference.Object = Node->Object;
NewObject->Reference.Class = ACPI_REFCLASS_NAME;
/*
* Increase reference of the object if needed (the object is likely a
* null for device nodes).
*/
AcpiUtAddReference (Node->Object);
ErrorExit:
ACPI_FREE (Name);
*ReturnObject = NewObject;
return (Status);
}
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