683 lines
21 KiB
C
683 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: aslprepkg - support for ACPI predefined name package objects
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2013, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <contrib/dev/acpica/compiler/aslcompiler.h>
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#include "aslcompiler.y.h"
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#include <contrib/dev/acpica/include/acpredef.h>
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslprepkg")
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/* Local prototypes */
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static void
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ApCheckPackageElements (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *Op,
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UINT8 Type1,
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UINT32 Count1,
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UINT8 Type2,
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UINT32 Count2);
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static void
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ApCheckPackageList (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *ParentOp,
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const ACPI_PREDEFINED_INFO *Package,
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UINT32 StartIndex,
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UINT32 Count);
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static void
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ApPackageTooSmall (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *Op,
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UINT32 Count,
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UINT32 ExpectedCount);
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static void
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ApZeroLengthPackage (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *Op);
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static void
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ApPackageTooLarge (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *Op,
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UINT32 Count,
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UINT32 ExpectedCount);
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/*******************************************************************************
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*
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* FUNCTION: ApCheckPackage
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*
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* PARAMETERS: ParentOp - Parser op for the package
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* Predefined - Pointer to package-specific info for
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* the method
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*
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* RETURN: None
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*
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* DESCRIPTION: Top-level validation for predefined name return package
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* objects.
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*
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******************************************************************************/
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void
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ApCheckPackage (
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ACPI_PARSE_OBJECT *ParentOp,
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const ACPI_PREDEFINED_INFO *Predefined)
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{
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ACPI_PARSE_OBJECT *Op;
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const ACPI_PREDEFINED_INFO *Package;
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ACPI_STATUS Status;
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UINT32 ExpectedCount;
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UINT32 Count;
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UINT32 i;
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/* The package info for this name is in the next table entry */
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Package = Predefined + 1;
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/* First child is the package length */
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Op = ParentOp->Asl.Child;
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Count = (UINT32) Op->Asl.Value.Integer;
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/*
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* Many of the variable-length top-level packages are allowed to simply
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* have zero elements. This allows the BIOS to tell the host that even
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* though the predefined name/method exists, the feature is not supported.
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* Other package types require one or more elements. In any case, there
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* is no need to continue validation.
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*/
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if (!Count)
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{
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switch (Package->RetInfo.Type)
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{
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case ACPI_PTYPE1_FIXED:
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case ACPI_PTYPE1_OPTION:
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case ACPI_PTYPE2_PKG_COUNT:
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case ACPI_PTYPE2_REV_FIXED:
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ApZeroLengthPackage (Predefined->Info.Name, ParentOp);
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break;
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case ACPI_PTYPE1_VAR:
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case ACPI_PTYPE2:
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case ACPI_PTYPE2_COUNT:
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case ACPI_PTYPE2_FIXED:
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case ACPI_PTYPE2_MIN:
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case ACPI_PTYPE2_FIX_VAR:
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default:
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break;
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}
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return;
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}
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/* Get the first element of the package */
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Op = Op->Asl.Next;
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/* Decode the package type */
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switch (Package->RetInfo.Type)
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{
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case ACPI_PTYPE1_FIXED:
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/*
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* The package count is fixed and there are no sub-packages
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*
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* If package is too small, exit.
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* If package is larger than expected, issue warning but continue
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*/
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ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
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if (Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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else if (Count > ExpectedCount)
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{
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ApPackageTooLarge (Predefined->Info.Name, ParentOp,
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Count, ExpectedCount);
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}
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/* Validate all elements of the package */
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ApCheckPackageElements (Predefined->Info.Name, Op,
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Package->RetInfo.ObjectType1, Package->RetInfo.Count1,
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Package->RetInfo.ObjectType2, Package->RetInfo.Count2);
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break;
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case ACPI_PTYPE1_VAR:
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/*
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* The package count is variable, there are no sub-packages,
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* and all elements must be of the same type
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*/
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for (i = 0; i < Count; i++)
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{
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ApCheckObjectType (Predefined->Info.Name, Op,
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Package->RetInfo.ObjectType1, i);
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Op = Op->Asl.Next;
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}
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break;
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case ACPI_PTYPE1_OPTION:
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/*
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* The package count is variable, there are no sub-packages.
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* There are a fixed number of required elements, and a variable
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* number of optional elements.
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*
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* Check if package is at least as large as the minimum required
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*/
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ExpectedCount = Package->RetInfo3.Count;
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if (Count < ExpectedCount)
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{
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goto PackageTooSmall;
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}
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/* Variable number of sub-objects */
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for (i = 0; i < Count; i++)
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{
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if (i < Package->RetInfo3.Count)
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{
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/* These are the required package elements (0, 1, or 2) */
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ApCheckObjectType (Predefined->Info.Name, Op,
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Package->RetInfo3.ObjectType[i], i);
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}
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else
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{
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/* These are the optional package elements */
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ApCheckObjectType (Predefined->Info.Name, Op,
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Package->RetInfo3.TailObjectType, i);
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}
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Op = Op->Asl.Next;
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}
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break;
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case ACPI_PTYPE2_REV_FIXED:
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/* First element is the (Integer) revision */
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ApCheckObjectType (Predefined->Info.Name, Op,
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ACPI_RTYPE_INTEGER, 0);
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Op = Op->Asl.Next;
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Count--;
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/* Examine the sub-packages */
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ApCheckPackageList (Predefined->Info.Name, Op,
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Package, 1, Count);
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break;
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case ACPI_PTYPE2_PKG_COUNT:
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/* First element is the (Integer) count of sub-packages to follow */
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Status = ApCheckObjectType (Predefined->Info.Name, Op,
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ACPI_RTYPE_INTEGER, 0);
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/* We must have an integer count from above (otherwise, use Count) */
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if (ACPI_SUCCESS (Status))
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{
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/*
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* Count cannot be larger than the parent package length, but
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* allow it to be smaller. The >= accounts for the Integer above.
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*/
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ExpectedCount = (UINT32) Op->Asl.Value.Integer;
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if (ExpectedCount >= Count)
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{
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goto PackageTooSmall;
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}
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Count = ExpectedCount;
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}
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Op = Op->Asl.Next;
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/* Examine the sub-packages */
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ApCheckPackageList (Predefined->Info.Name, Op,
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Package, 1, Count);
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break;
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case ACPI_PTYPE2:
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case ACPI_PTYPE2_FIXED:
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case ACPI_PTYPE2_MIN:
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case ACPI_PTYPE2_COUNT:
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case ACPI_PTYPE2_FIX_VAR:
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/*
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* These types all return a single Package that consists of a
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* variable number of sub-Packages.
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*/
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/* Examine the sub-packages */
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ApCheckPackageList (Predefined->Info.Name, Op,
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Package, 0, Count);
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break;
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default:
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return;
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}
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return;
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PackageTooSmall:
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ApPackageTooSmall (Predefined->Info.Name, ParentOp,
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Count, ExpectedCount);
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}
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/*******************************************************************************
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*
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* FUNCTION: ApCheckPackageElements
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*
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* PARAMETERS: PredefinedName - Name of the predefined object
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* Op - Parser op for the package
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* Type1 - Object type for first group
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* Count1 - Count for first group
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* Type2 - Object type for second group
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* Count2 - Count for second group
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*
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* RETURN: None
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*
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* DESCRIPTION: Validate all elements of a package. Works with packages that
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* are defined to contain up to two groups of different object
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* types.
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*
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******************************************************************************/
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static void
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ApCheckPackageElements (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *Op,
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UINT8 Type1,
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UINT32 Count1,
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UINT8 Type2,
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UINT32 Count2)
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{
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UINT32 i;
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/*
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* Up to two groups of package elements are supported by the data
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* structure. All elements in each group must be of the same type.
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* The second group can have a count of zero.
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*
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* Aborts check upon a NULL package element, as this means (at compile
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* time) that the remainder of the package elements are also NULL
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* (This is the only way to create NULL package elements.)
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*/
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for (i = 0; (i < Count1) && Op; i++)
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{
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ApCheckObjectType (PredefinedName, Op, Type1, i);
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Op = Op->Asl.Next;
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}
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for (i = 0; (i < Count2) && Op; i++)
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{
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ApCheckObjectType (PredefinedName, Op, Type2, (i + Count1));
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Op = Op->Asl.Next;
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}
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}
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/*******************************************************************************
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*
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* FUNCTION: ApCheckPackageList
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*
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* PARAMETERS: PredefinedName - Name of the predefined object
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* ParentOp - Parser op of the parent package
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* Package - Package info for this predefined name
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* StartIndex - Index in parent package where list begins
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* ParentCount - Element count of parent package
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*
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* RETURN: None
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*
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* DESCRIPTION: Validate the individual package elements for a predefined name.
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* Handles the cases where the predefined name is defined as a
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* Package of Packages (subpackages). These are the types:
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*
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* ACPI_PTYPE2
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* ACPI_PTYPE2_FIXED
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* ACPI_PTYPE2_MIN
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* ACPI_PTYPE2_COUNT
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* ACPI_PTYPE2_FIX_VAR
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*
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******************************************************************************/
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static void
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ApCheckPackageList (
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const char *PredefinedName,
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ACPI_PARSE_OBJECT *ParentOp,
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const ACPI_PREDEFINED_INFO *Package,
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UINT32 StartIndex,
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UINT32 ParentCount)
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{
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ACPI_PARSE_OBJECT *SubPackageOp = ParentOp;
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ACPI_PARSE_OBJECT *Op;
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ACPI_STATUS Status;
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UINT32 Count;
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UINT32 ExpectedCount;
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UINT32 i;
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UINT32 j;
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/*
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* Validate each subpackage in the parent Package
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*
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* Note: We ignore NULL package elements on the assumption that
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* they will be initialized by the BIOS or other ASL code.
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*/
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for (i = 0; (i < ParentCount) && SubPackageOp; i++)
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{
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/* Each object in the list must be of type Package */
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Status = ApCheckObjectType (PredefinedName, SubPackageOp,
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ACPI_RTYPE_PACKAGE, i + StartIndex);
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if (ACPI_FAILURE (Status))
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{
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goto NextSubpackage;
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}
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/* Examine the different types of expected subpackages */
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Op = SubPackageOp->Asl.Child;
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/* First child is the package length */
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Count = (UINT32) Op->Asl.Value.Integer;
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Op = Op->Asl.Next;
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/* The subpackage must have at least one element */
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if (!Count)
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{
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ApZeroLengthPackage (PredefinedName, SubPackageOp);
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goto NextSubpackage;
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}
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/*
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* Decode the package type.
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* PTYPE2 indicates that a "package of packages" is expected for
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* this name. The various flavors of PTYPE2 indicate the number
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* and format of the subpackages.
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*/
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switch (Package->RetInfo.Type)
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{
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case ACPI_PTYPE2:
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case ACPI_PTYPE2_PKG_COUNT:
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case ACPI_PTYPE2_REV_FIXED:
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/* Each subpackage has a fixed number of elements */
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ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
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if (Count < ExpectedCount)
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{
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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break;
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}
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ApCheckPackageElements (PredefinedName, Op,
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Package->RetInfo.ObjectType1, Package->RetInfo.Count1,
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Package->RetInfo.ObjectType2, Package->RetInfo.Count2);
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break;
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case ACPI_PTYPE2_FIX_VAR:
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/*
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* Each subpackage has a fixed number of elements and an
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* optional element
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*/
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ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2;
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if (Count < ExpectedCount)
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{
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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break;
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}
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ApCheckPackageElements (PredefinedName, Op,
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Package->RetInfo.ObjectType1, Package->RetInfo.Count1,
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Package->RetInfo.ObjectType2,
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Count - Package->RetInfo.Count1);
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break;
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case ACPI_PTYPE2_FIXED:
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/* Each sub-package has a fixed length */
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ExpectedCount = Package->RetInfo2.Count;
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if (Count < ExpectedCount)
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{
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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break;
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}
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/* Check each object/type combination */
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for (j = 0; j < ExpectedCount; j++)
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{
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ApCheckObjectType (PredefinedName, Op,
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Package->RetInfo2.ObjectType[j], j);
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Op = Op->Asl.Next;
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}
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break;
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case ACPI_PTYPE2_MIN:
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/* Each sub-package has a variable but minimum length */
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ExpectedCount = Package->RetInfo.Count1;
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if (Count < ExpectedCount)
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{
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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break;
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}
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/* Check the type of each sub-package element */
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ApCheckPackageElements (PredefinedName, Op,
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Package->RetInfo.ObjectType1, Count, 0, 0);
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break;
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case ACPI_PTYPE2_COUNT:
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/*
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* First element is the (Integer) count of elements, including
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* the count field (the ACPI name is NumElements)
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*/
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Status = ApCheckObjectType (PredefinedName, Op,
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ACPI_RTYPE_INTEGER, 0);
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/* We must have an integer count from above (otherwise, use Count) */
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if (ACPI_SUCCESS (Status))
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{
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/*
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* Make sure package is large enough for the Count and is
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* is as large as the minimum size
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*/
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ExpectedCount = (UINT32) Op->Asl.Value.Integer;
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if (Count < ExpectedCount)
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{
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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break;
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}
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else if (Count > ExpectedCount)
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{
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ApPackageTooLarge (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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}
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/* Some names of this type have a minimum length */
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if (Count < Package->RetInfo.Count1)
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{
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ExpectedCount = Package->RetInfo.Count1;
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, ExpectedCount);
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break;
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}
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Count = ExpectedCount;
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}
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/* Check the type of each sub-package element */
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Op = Op->Asl.Next;
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ApCheckPackageElements (PredefinedName, Op,
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Package->RetInfo.ObjectType1, (Count - 1), 0, 0);
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break;
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default:
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break;
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}
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|
|
NextSubpackage:
|
|
SubPackageOp = SubPackageOp->Asl.Next;
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: ApPackageTooSmall
|
|
*
|
|
* PARAMETERS: PredefinedName - Name of the predefined object
|
|
* Op - Current parser op
|
|
* Count - Actual package element count
|
|
* ExpectedCount - Expected package element count
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Issue error message for a package that is smaller than
|
|
* required.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
ApPackageTooSmall (
|
|
const char *PredefinedName,
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Count,
|
|
UINT32 ExpectedCount)
|
|
{
|
|
|
|
sprintf (MsgBuffer, "%s: length %u, required minimum is %u",
|
|
PredefinedName, Count, ExpectedCount);
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_RESERVED_PACKAGE_LENGTH, Op, MsgBuffer);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: ApZeroLengthPackage
|
|
*
|
|
* PARAMETERS: PredefinedName - Name of the predefined object
|
|
* Op - Current parser op
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Issue error message for a zero-length package (a package that
|
|
* is required to have a non-zero length). Variable length
|
|
* packages seem to be allowed to have zero length, however.
|
|
* Even if not allowed, BIOS code does it.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
ApZeroLengthPackage (
|
|
const char *PredefinedName,
|
|
ACPI_PARSE_OBJECT *Op)
|
|
{
|
|
|
|
sprintf (MsgBuffer, "%s: length is zero", PredefinedName);
|
|
|
|
AslError (ASL_ERROR, ASL_MSG_RESERVED_PACKAGE_LENGTH, Op, MsgBuffer);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: ApPackageTooLarge
|
|
*
|
|
* PARAMETERS: PredefinedName - Name of the predefined object
|
|
* Op - Current parser op
|
|
* Count - Actual package element count
|
|
* ExpectedCount - Expected package element count
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Issue a remark for a package that is larger than expected.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
ApPackageTooLarge (
|
|
const char *PredefinedName,
|
|
ACPI_PARSE_OBJECT *Op,
|
|
UINT32 Count,
|
|
UINT32 ExpectedCount)
|
|
{
|
|
|
|
sprintf (MsgBuffer, "%s: length is %u, only %u required",
|
|
PredefinedName, Count, ExpectedCount);
|
|
|
|
AslError (ASL_REMARK, ASL_MSG_RESERVED_PACKAGE_LENGTH, Op, MsgBuffer);
|
|
}
|