544 lines
17 KiB
C
544 lines
17 KiB
C
/******************************************************************************
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*
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* Module Name: dtfield.c - Code generation for individual source fields
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*
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*****************************************************************************/
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/******************************************************************************
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*
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* 1. Copyright Notice
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*
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* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
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* All rights reserved.
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*
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* 2. License
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*
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* 2.1. This is your license from Intel Corp. under its intellectual property
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* rights. You may have additional license terms from the party that provided
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* you this software, covering your right to use that party's intellectual
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* property rights.
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*
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* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
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* copy of the source code appearing in this file ("Covered Code") an
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* irrevocable, perpetual, worldwide license under Intel's copyrights in the
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* base code distributed originally by Intel ("Original Intel Code") to copy,
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* make derivatives, distribute, use and display any portion of the Covered
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* Code in any form, with the right to sublicense such rights; and
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*
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* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
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* license (with the right to sublicense), under only those claims of Intel
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* patents that are infringed by the Original Intel Code, to make, use, sell,
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* offer to sell, and import the Covered Code and derivative works thereof
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* solely to the minimum extent necessary to exercise the above copyright
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* license, and in no event shall the patent license extend to any additions
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* to or modifications of the Original Intel Code. No other license or right
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* is granted directly or by implication, estoppel or otherwise;
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*
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* The above copyright and patent license is granted only if the following
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* conditions are met:
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*
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* 3. Conditions
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*
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* 3.1. Redistribution of Source with Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification with rights to further distribute source must include
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* the above Copyright Notice, the above License, this list of Conditions,
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* and the following Disclaimer and Export Compliance provision. In addition,
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* Licensee must cause all Covered Code to which Licensee contributes to
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* contain a file documenting the changes Licensee made to create that Covered
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* Code and the date of any change. Licensee must include in that file the
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* documentation of any changes made by any predecessor Licensee. Licensee
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* must include a prominent statement that the modification is derived,
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* directly or indirectly, from Original Intel Code.
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*
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* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
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* Redistribution of source code of any substantial portion of the Covered
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* Code or modification without rights to further distribute source must
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* include the following Disclaimer and Export Compliance provision in the
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* documentation and/or other materials provided with distribution. In
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* addition, Licensee may not authorize further sublicense of source of any
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* portion of the Covered Code, and must include terms to the effect that the
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* license from Licensee to its licensee is limited to the intellectual
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* property embodied in the software Licensee provides to its licensee, and
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* not to intellectual property embodied in modifications its licensee may
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* make.
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*
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* 3.3. Redistribution of Executable. Redistribution in executable form of any
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* substantial portion of the Covered Code or modification must reproduce the
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* above Copyright Notice, and the following Disclaimer and Export Compliance
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* provision in the documentation and/or other materials provided with the
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* distribution.
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*
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* 3.4. Intel retains all right, title, and interest in and to the Original
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* Intel Code.
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*
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* 3.5. Neither the name Intel nor any other trademark owned or controlled by
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* Intel shall be used in advertising or otherwise to promote the sale, use or
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* other dealings in products derived from or relating to the Covered Code
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* without prior written authorization from Intel.
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*
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* 4. Disclaimer and Export Compliance
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*
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* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
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* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
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* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
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* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
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* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
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* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
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* PARTICULAR PURPOSE.
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*
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* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
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* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
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* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
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* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
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* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
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* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
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* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
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* LIMITED REMEDY.
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*
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* 4.3. Licensee shall not export, either directly or indirectly, any of this
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* software or system incorporating such software without first obtaining any
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* required license or other approval from the U. S. Department of Commerce or
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* any other agency or department of the United States Government. In the
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* event Licensee exports any such software from the United States or
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* re-exports any such software from a foreign destination, Licensee shall
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* ensure that the distribution and export/re-export of the software is in
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* compliance with all laws, regulations, orders, or other restrictions of the
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* U.S. Export Administration Regulations. Licensee agrees that neither it nor
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* any of its subsidiaries will export/re-export any technical data, process,
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* software, or service, directly or indirectly, to any country for which the
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* United States government or any agency thereof requires an export license,
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* other governmental approval, or letter of assurance, without first obtaining
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* such license, approval or letter.
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*
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*****************************************************************************/
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#define __DTFIELD_C__
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#include "aslcompiler.h"
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#include "dtcompiler.h"
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#define _COMPONENT DT_COMPILER
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ACPI_MODULE_NAME ("dtfield")
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/* Local prototypes */
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static void
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DtCompileString (
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UINT8 *Buffer,
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DT_FIELD *Field,
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UINT32 ByteLength);
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static char *
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DtPciPathToBuffer (
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char *PciPath);
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static void
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DtCompilePciPath (
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UINT8 *Buffer,
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char *StringValue,
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DT_FIELD *Field,
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UINT32 ByteLength);
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/******************************************************************************
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*
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* FUNCTION: DtCompileOneField
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*
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* PARAMETERS: Buffer - Output buffer
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* Field - Field to be compiled
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* ByteLength - Byte length of the field
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* Type - Field type
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*
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* RETURN: None
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*
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* DESCRIPTION: Compile a field value to binary
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*
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*****************************************************************************/
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void
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DtCompileOneField (
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UINT8 *Buffer,
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DT_FIELD *Field,
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UINT32 ByteLength,
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UINT8 Type,
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UINT8 Flags)
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{
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switch (Type)
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{
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case DT_FIELD_TYPE_INTEGER:
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DtCompileInteger (Buffer, Field, ByteLength, Flags);
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break;
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case DT_FIELD_TYPE_STRING:
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DtCompileString (Buffer, Field, ByteLength);
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break;
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case DT_FIELD_TYPE_BUFFER:
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DtCompileBuffer (Buffer, Field->Value, Field, ByteLength);
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break;
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case DT_FIELD_TYPE_PCI_PATH:
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DtCompilePciPath (Buffer, Field->Value, Field, ByteLength);
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break;
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default:
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DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid field type");
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break;
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}
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}
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/******************************************************************************
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*
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* FUNCTION: DtCompileString
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*
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* PARAMETERS: Buffer - Output buffer
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* Field - String to be copied to buffer
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* ByteLength - Maximum length of string
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*
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* RETURN: None
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*
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* DESCRIPTION: Copy string to the buffer
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*
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*****************************************************************************/
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static void
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DtCompileString (
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UINT8 *Buffer,
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DT_FIELD *Field,
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UINT32 ByteLength)
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{
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UINT32 Length;
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Length = ACPI_STRLEN (Field->Value);
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/* Check if the string is too long for the field */
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if (Length > ByteLength)
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{
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sprintf (MsgBuffer, "Maximum %u characters", ByteLength);
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DtError (ASL_ERROR, ASL_MSG_STRING_LENGTH, Field, MsgBuffer);
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Length = ByteLength;
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}
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/* If input string is shorter than ByteLength, pad with blanks */
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ACPI_MEMSET (Buffer, 0x20, ByteLength);
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ACPI_MEMCPY (Buffer, Field->Value, Length);
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}
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/******************************************************************************
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*
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* FUNCTION: DtCompileInteger
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*
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* PARAMETERS: Buffer - Output buffer
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* Field - Field obj with Integer to be compiled
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* ByteLength - Byte length of the integer
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*
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* RETURN: None
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*
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* DESCRIPTION: Compile an integer
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*
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*****************************************************************************/
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void
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DtCompileInteger (
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UINT8 *Buffer,
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DT_FIELD *Field,
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UINT32 ByteLength,
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UINT8 Flags)
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{
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UINT64 Value = 0;
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UINT64 MaxValue;
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UINT8 *Hex;
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char *Message = NULL;
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ACPI_STATUS Status;
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int i;
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/* Byte length must be in range 1-8 */
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if ((ByteLength > 8) || (ByteLength == 0))
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{
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DtFatal (ASL_MSG_COMPILER_INTERNAL, Field,
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"Invalid internal Byte length");
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return;
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}
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/* Convert string to an actual integer */
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Status = DtStrtoul64 (Field->Value, &Value);
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if (ACPI_FAILURE (Status))
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{
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if (Status == AE_LIMIT)
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{
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Message = "Constant larger than 64 bits";
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}
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else if (Status == AE_BAD_CHARACTER)
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{
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Message = "Invalid character in constant";
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}
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DtError (ASL_ERROR, ASL_MSG_INVALID_HEX_INTEGER, Field, Message);
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goto Exit;
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}
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/* Ensure that reserved fields are set to zero */
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/* TBD: should we set to zero, or just make this an ERROR? */
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/* TBD: Probably better to use a flag */
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if (!ACPI_STRCMP (Field->Name, "Reserved") &&
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(Value != 0))
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{
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DtError (ASL_WARNING, ASL_MSG_RESERVED_VALUE, Field,
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"Setting to zero");
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Value = 0;
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}
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/* Check if the value must be non-zero */
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if ((Value == 0) && (Flags & DT_NON_ZERO))
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{
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DtError (ASL_ERROR, ASL_MSG_ZERO_VALUE, Field, NULL);
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}
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/*
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* Generate the maximum value for the data type (ByteLength)
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* Note: construct chosen for maximum portability
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*/
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MaxValue = ((UINT64) (-1)) >> (64 - (ByteLength * 8));
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/* Validate that the input value is within range of the target */
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if (Value > MaxValue)
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{
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sprintf (MsgBuffer, "Maximum %u bytes", ByteLength);
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DtError (ASL_ERROR, ASL_MSG_INTEGER_SIZE, Field, MsgBuffer);
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}
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/*
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* TBD: hard code for ASF! Capabilites field.
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*
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* This field is actually a buffer, not a 56-bit integer --
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* so, the ordering is reversed. Something should be fixed
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* so we don't need this code.
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*/
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if (ByteLength == 7)
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{
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Hex = ACPI_CAST_PTR (UINT8, &Value);
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for (i = 6; i >= 0; i--)
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{
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Buffer[i] = *Hex;
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Hex++;
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}
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return;
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}
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Exit:
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ACPI_MEMCPY (Buffer, &Value, ByteLength);
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return;
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}
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/******************************************************************************
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*
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* FUNCTION: DtPciPathToBuffer
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*
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* PARAMETERS: PciPath - DMAR "PCI Path" field
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*
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* RETURN: Strings of PCI path
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*
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* DESCRIPTION: Remove brackets and comma from DMAR "PCI Path" string, for
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* example: [1D, 01] ==> 1D 01
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*
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*****************************************************************************/
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static char *
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DtPciPathToBuffer (
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char *PciPath)
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{
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char *Buffer;
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Buffer = UtLocalCalloc (6);
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Buffer[0] = PciPath[1];
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Buffer[1] = PciPath[2];
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Buffer[2] = ' ';
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Buffer[3] = PciPath[5];
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Buffer[4] = PciPath[6];
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return (Buffer);
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}
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/******************************************************************************
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*
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* FUNCTION: DtCompileBuffer
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*
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* PARAMETERS: Buffer - Output buffer
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* StringValue - Integer list to be compiled
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* Field - Current field object
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* ByteLength - Byte length of the integer list
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*
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* RETURN: Count of remaining data in the input list
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*
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* DESCRIPTION: Compile and pack an integer list, for example
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* "AA 1F 20 3B" ==> Buffer[] = {0xAA,0x1F,0x20,0x3B}
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*
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*****************************************************************************/
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UINT32
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DtCompileBuffer (
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UINT8 *Buffer,
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char *StringValue,
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DT_FIELD *Field,
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UINT32 ByteLength)
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{
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ACPI_STATUS Status;
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char Hex[3];
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UINT64 Value;
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UINT32 i;
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UINT32 Count;
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Count = ACPI_STRLEN (StringValue) / 3 + 1;
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Hex[2] = 0;
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for (i = 0; i < Count; i++)
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{
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Hex[0] = StringValue[0];
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Hex[1] = StringValue[1];
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/* Convert one hex byte */
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Value = 0;
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Status = DtStrtoul64 (Hex, &Value);
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if (ACPI_FAILURE (Status))
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{
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DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, MsgBuffer);
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return (ByteLength - Count);
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}
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Buffer[i] = (UINT8) Value;
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StringValue += 3;
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}
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return (ByteLength - Count);
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}
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/******************************************************************************
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*
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* FUNCTION: DtCompilePciPath
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*
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* PARAMETERS: Buffer - Output buffer
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* StringValue - DMAR pci path string
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* ByteLength - Byte length of DMAR pci path string, 2
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*
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* RETURN: None
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*
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* DESCRIPTION: Compile DMAR PCI path string to binary
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*
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*****************************************************************************/
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static void
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DtCompilePciPath (
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UINT8 *Buffer,
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char *StringValue,
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DT_FIELD *Field,
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UINT32 ByteLength)
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{
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char *PciPathBuffer;
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/* Parse path to simple hex digits, then convert to binary */
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PciPathBuffer = DtPciPathToBuffer (StringValue);
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DtCompileBuffer (Buffer, PciPathBuffer, Field, ByteLength);
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ACPI_FREE (PciPathBuffer);
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}
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/******************************************************************************
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*
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* FUNCTION: DtCompileFlag
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*
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* PARAMETERS: Buffer - Output buffer
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* Field - Field to be compiled
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* Info - Flag info
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* BitPosition - Flag bit position
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*
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* RETURN: Next flag bit position
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*
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* DESCRIPTION: Compile a flag
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*
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*****************************************************************************/
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UINT32
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DtCompileFlag (
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UINT8 *Buffer,
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DT_FIELD *Field,
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ACPI_DMTABLE_INFO *Info,
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UINT32 BitPosition)
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{
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UINT64 Value = 0;
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UINT32 BitLength = 1;
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ACPI_STATUS Status;
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Status = DtStrtoul64 (Field->Value, &Value);
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if (ACPI_FAILURE (Status))
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{
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DtError (ASL_ERROR, ASL_MSG_INVALID_HEX_INTEGER, Field, NULL);
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}
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switch (Info->Opcode)
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{
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case ACPI_DMT_FLAG0:
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case ACPI_DMT_FLAG1:
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case ACPI_DMT_FLAG2:
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case ACPI_DMT_FLAG3:
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case ACPI_DMT_FLAG4:
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case ACPI_DMT_FLAG5:
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case ACPI_DMT_FLAG6:
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case ACPI_DMT_FLAG7:
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BitLength = 1;
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break;
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case ACPI_DMT_FLAGS0:
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case ACPI_DMT_FLAGS2:
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BitLength = 2;
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break;
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default:
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DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid flag opcode");
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break;
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}
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/* Check range of the input flag value */
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if (Value >= ((UINT64) 1 << BitLength))
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{
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sprintf (MsgBuffer, "Maximum %u bit", BitLength);
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DtError (ASL_ERROR, ASL_MSG_FLAG_VALUE, Field, MsgBuffer);
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Value = 0;
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}
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/* Insert the flag, return next flag bit position */
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Buffer += ACPI_DIV_8 (BitPosition);
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*Buffer |= (UINT8) (Value << ACPI_MOD_8 (BitPosition));
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return (BitPosition + BitLength);
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}
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