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Diffstat (limited to 'compiler/dtsubtable.c')
| -rw-r--r-- | compiler/dtsubtable.c | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/compiler/dtsubtable.c b/compiler/dtsubtable.c new file mode 100644 index 0000000000000..9bbb4b463c193 --- /dev/null +++ b/compiler/dtsubtable.c @@ -0,0 +1,400 @@ +/****************************************************************************** + * + * Module Name: dtsubtable.c - handling of subtables within ACPI tables + * + *****************************************************************************/ + +/****************************************************************************** + * + * 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 __DTSUBTABLE_C__ + +#include "aslcompiler.h" +#include "dtcompiler.h" + +#define _COMPONENT DT_COMPILER + ACPI_MODULE_NAME ("dtsubtable") + + +/****************************************************************************** + * + * FUNCTION: DtCreateSubtable + * + * PARAMETERS: Buffer - Input buffer + * Length - Buffer length + * RetSubtable - Returned newly created subtable + * + * RETURN: None + * + * DESCRIPTION: Create a subtable that is not listed with ACPI_DMTABLE_INFO + * For example, FACS has 24 bytes reserved at the end + * and it's not listed at AcpiDmTableInfoFacs + * + *****************************************************************************/ + +void +DtCreateSubtable ( + UINT8 *Buffer, + UINT32 Length, + DT_SUBTABLE **RetSubtable) +{ + DT_SUBTABLE *Subtable; + + + Subtable = UtLocalCalloc (sizeof (DT_SUBTABLE)); + + /* Create a new buffer for the subtable data */ + + Subtable->Buffer = UtLocalCalloc (Length); + ACPI_MEMCPY (Subtable->Buffer, Buffer, Length); + + Subtable->Length = Length; + Subtable->TotalLength = Length; + + *RetSubtable = Subtable; +} + + +/****************************************************************************** + * + * FUNCTION: DtInsertSubtable + * + * PARAMETERS: ParentTable - The Parent of the new subtable + * Subtable - The new subtable to insert + * + * RETURN: None + * + * DESCRIPTION: Insert the new subtable to the parent table + * + *****************************************************************************/ + +void +DtInsertSubtable ( + DT_SUBTABLE *ParentTable, + DT_SUBTABLE *Subtable) +{ + DT_SUBTABLE *ChildTable; + + + Subtable->Peer = NULL; + Subtable->Parent = ParentTable; + + /* Link the new entry into the child list */ + + if (!ParentTable->Child) + { + ParentTable->Child = Subtable; + } + else + { + /* Walk to the end of the child list */ + + ChildTable = ParentTable->Child; + while (ChildTable->Peer) + { + ChildTable = ChildTable->Peer; + } + + /* Add new subtable at the end of the child list */ + + ChildTable->Peer = Subtable; + } +} + + +/****************************************************************************** + * + * FUNCTION: DtPushSubtable + * + * PARAMETERS: Subtable - Subtable to push + * + * RETURN: None + * + * DESCRIPTION: Push a subtable onto a subtable stack + * + *****************************************************************************/ + +void +DtPushSubtable ( + DT_SUBTABLE *Subtable) +{ + + Subtable->StackTop = Gbl_SubtableStack; + Gbl_SubtableStack = Subtable; +} + + +/****************************************************************************** + * + * FUNCTION: DtPopSubtable + * + * PARAMETERS: None + * + * RETURN: None + * + * DESCRIPTION: Pop a subtable from a subtable stack. Uses global SubtableStack + * + *****************************************************************************/ + +void +DtPopSubtable ( + void) +{ + DT_SUBTABLE *Subtable; + + + Subtable = Gbl_SubtableStack; + + if (Subtable) + { + Gbl_SubtableStack = Subtable->StackTop; + } +} + + +/****************************************************************************** + * + * FUNCTION: DtPeekSubtable + * + * PARAMETERS: None + * + * RETURN: The subtable on top of stack + * + * DESCRIPTION: Get the subtable on top of stack + * + *****************************************************************************/ + +DT_SUBTABLE * +DtPeekSubtable ( + void) +{ + + return (Gbl_SubtableStack); +} + + +/****************************************************************************** + * + * FUNCTION: DtGetNextSubtable + * + * PARAMETERS: ParentTable - Parent table whose children we are + * getting + * ChildTable - Previous child that was found. + * The NEXT child will be returned + * + * RETURN: Pointer to the NEXT child or NULL if none is found. + * + * DESCRIPTION: Return the next peer subtable within the tree. + * + *****************************************************************************/ + +DT_SUBTABLE * +DtGetNextSubtable ( + DT_SUBTABLE *ParentTable, + DT_SUBTABLE *ChildTable) +{ + ACPI_FUNCTION_ENTRY (); + + + if (!ChildTable) + { + /* It's really the parent's _scope_ that we want */ + + return (ParentTable->Child); + } + + /* Otherwise just return the next peer (NULL if at end-of-list) */ + + return (ChildTable->Peer); +} + + +/****************************************************************************** + * + * FUNCTION: DtGetParentSubtable + * + * PARAMETERS: Subtable - Current subtable + * + * RETURN: Parent of the given subtable + * + * DESCRIPTION: Get the parent of the given subtable in the tree + * + *****************************************************************************/ + +DT_SUBTABLE * +DtGetParentSubtable ( + DT_SUBTABLE *Subtable) +{ + + if (!Subtable) + { + return (NULL); + } + + return (Subtable->Parent); +} + + +/****************************************************************************** + * + * FUNCTION: DtGetSubtableLength + * + * PARAMETERS: Field - Current field list pointer + * Info - Data table info + * + * RETURN: Subtable length + * + * DESCRIPTION: Get length of bytes needed to compile the subtable + * + *****************************************************************************/ + +UINT32 +DtGetSubtableLength ( + DT_FIELD *Field, + ACPI_DMTABLE_INFO *Info) +{ + UINT32 ByteLength = 0; + + + /* Walk entire Info table; Null name terminates */ + + for (; Info->Name; Info++) + { + ByteLength += DtGetFieldLength (Field, Info); + } + + return (ByteLength); +} + + +/****************************************************************************** + * + * FUNCTION: DtSetSubtableLength + * + * PARAMETERS: Subtable - Subtable + * + * RETURN: None + * + * DESCRIPTION: Set length of the subtable into its length field + * + *****************************************************************************/ + +void +DtSetSubtableLength ( + DT_SUBTABLE *Subtable) +{ + + if (!Subtable->LengthField) + { + return; + } + + ACPI_MEMCPY (Subtable->LengthField, &Subtable->TotalLength, + Subtable->SizeOfLengthField); +} |