Current Path : /usr/src/sys/contrib/dev/acpica/compiler/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //usr/src/sys/contrib/dev/acpica/compiler/dtsubtable.c |
/****************************************************************************** * * Module Name: dtsubtable.c - handling of subtables within ACPI tables * *****************************************************************************/ /* * Copyright (C) 2000 - 2011, Intel Corp. * All rights reserved. * * 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. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * 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 MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. */ #define __DTSUBTABLE_C__ #include <contrib/dev/acpica/compiler/aslcompiler.h> #include <contrib/dev/acpica/compiler/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; UINT8 Step; UINT8 i; /* Walk entire Info table; Null name terminates */ for (; Info->Name; Info++) { if (!Field) { goto Error; } ByteLength += DtGetFieldLength (Field, Info); switch (Info->Opcode) { case ACPI_DMT_GAS: Step = 5; break; case ACPI_DMT_HESTNTFY: Step = 9; break; default: Step = 1; break; } for (i = 0; i < Step; i++) { if (!Field) { goto Error; } Field = Field->Next; } } return (ByteLength); Error: if (!Field) { sprintf (MsgBuffer, "Found NULL field - Field name \"%s\" needed", Info->Name); DtFatal (ASL_MSG_COMPILER_INTERNAL, NULL, MsgBuffer); } return (ASL_EOF); } /****************************************************************************** * * 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); }