780 lines
24 KiB
C
780 lines
24 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 - 2015, 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 "aslcompiler.h"
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#include "aslcompiler.y.h"
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#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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case ACPI_PTYPE2_VAR_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 subpackages
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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 subpackages,
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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 subpackages.
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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 subpackages */
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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 subpackages 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 subpackages */
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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_UUID_PAIR:
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/* The package contains a variable list of UUID Buffer/Package pairs */
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/* The length of the package must be even */
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if (Count & 1)
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{
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sprintf (MsgBuffer, "%4.4s: Package length, %d, must be even.",
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Predefined->Info.Name, Count);
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AslError (ASL_ERROR, ASL_MSG_RESERVED_PACKAGE_LENGTH,
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ParentOp->Asl.Child, MsgBuffer);
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}
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/* Validate the alternating types */
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for (i = 0; i < Count; ++i)
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{
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if (i & 1)
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{
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ApCheckObjectType (Predefined->Info.Name, Op,
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Package->RetInfo.ObjectType2, i);
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}
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else
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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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}
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Op = Op->Asl.Next;
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}
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break;
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case ACPI_PTYPE2_VAR_VAR:
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/* Check for minimum size (ints at beginning + 1 subpackage) */
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ExpectedCount = Package->RetInfo4.Count1 + 1;
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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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/* Check the non-package elements at beginning of main package */
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for (i = 0; i < Package->RetInfo4.Count1; ++i)
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{
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Status = ApCheckObjectType (Predefined->Info.Name, Op,
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Package->RetInfo4.ObjectType1, i);
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Op = Op->Asl.Next;
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}
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/* Examine the variable-length list of subpackages */
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ApCheckPackageList (Predefined->Info.Name, Op,
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Package, Package->RetInfo4.Count1, 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 subpackages.
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*/
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/* Examine the subpackages */
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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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* ACPI_PTYPE2_VAR_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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/*
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* Most subpackage must have at least one element, with
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* only rare exceptions. (_RDI)
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*/
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if (!Count &&
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(Package->RetInfo.Type != ACPI_PTYPE2_VAR_VAR))
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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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if (Count > ExpectedCount)
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{
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ApPackageTooLarge (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_VAR_VAR:
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/*
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* Must have at least the minimum number elements.
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* A zero PkgCount means the number of elements is variable.
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*/
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ExpectedCount = Package->RetInfo4.PkgCount;
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if (ExpectedCount && (Count < ExpectedCount))
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{
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ApPackageTooSmall (PredefinedName, SubPackageOp,
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Count, 1);
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break;
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}
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ApCheckPackageElements (PredefinedName, Op,
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Package->RetInfo4.SubObjectTypes,
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Package->RetInfo4.PkgCount,
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0, 0);
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break;
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|
|
case ACPI_PTYPE2_FIXED:
|
|
|
|
/* Each subpackage has a fixed length */
|
|
|
|
ExpectedCount = Package->RetInfo2.Count;
|
|
if (Count < ExpectedCount)
|
|
{
|
|
ApPackageTooSmall (PredefinedName, SubPackageOp,
|
|
Count, ExpectedCount);
|
|
break;
|
|
}
|
|
if (Count > ExpectedCount)
|
|
{
|
|
ApPackageTooLarge (PredefinedName, SubPackageOp,
|
|
Count, ExpectedCount);
|
|
break;
|
|
}
|
|
|
|
/* Check each object/type combination */
|
|
|
|
for (j = 0; j < ExpectedCount; j++)
|
|
{
|
|
ApCheckObjectType (PredefinedName, Op,
|
|
Package->RetInfo2.ObjectType[j], j);
|
|
|
|
Op = Op->Asl.Next;
|
|
}
|
|
break;
|
|
|
|
case ACPI_PTYPE2_MIN:
|
|
|
|
/* Each subpackage has a variable but minimum length */
|
|
|
|
ExpectedCount = Package->RetInfo.Count1;
|
|
if (Count < ExpectedCount)
|
|
{
|
|
ApPackageTooSmall (PredefinedName, SubPackageOp,
|
|
Count, ExpectedCount);
|
|
break;
|
|
}
|
|
|
|
/* Check the type of each subpackage element */
|
|
|
|
ApCheckPackageElements (PredefinedName, Op,
|
|
Package->RetInfo.ObjectType1, Count, 0, 0);
|
|
break;
|
|
|
|
case ACPI_PTYPE2_COUNT:
|
|
/*
|
|
* First element is the (Integer) count of elements, including
|
|
* the count field (the ACPI name is NumElements)
|
|
*/
|
|
Status = ApCheckObjectType (PredefinedName, Op,
|
|
ACPI_RTYPE_INTEGER, 0);
|
|
|
|
/* We must have an integer count from above (otherwise, use Count) */
|
|
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/*
|
|
* Make sure package is large enough for the Count and is
|
|
* is as large as the minimum size
|
|
*/
|
|
ExpectedCount = (UINT32) Op->Asl.Value.Integer;
|
|
|
|
if (Count < ExpectedCount)
|
|
{
|
|
ApPackageTooSmall (PredefinedName, SubPackageOp,
|
|
Count, ExpectedCount);
|
|
break;
|
|
}
|
|
else if (Count > ExpectedCount)
|
|
{
|
|
ApPackageTooLarge (PredefinedName, SubPackageOp,
|
|
Count, ExpectedCount);
|
|
}
|
|
|
|
/* Some names of this type have a minimum length */
|
|
|
|
if (Count < Package->RetInfo.Count1)
|
|
{
|
|
ExpectedCount = Package->RetInfo.Count1;
|
|
ApPackageTooSmall (PredefinedName, SubPackageOp,
|
|
Count, ExpectedCount);
|
|
break;
|
|
}
|
|
|
|
Count = ExpectedCount;
|
|
}
|
|
|
|
/* Check the type of each subpackage element */
|
|
|
|
Op = Op->Asl.Next;
|
|
ApCheckPackageElements (PredefinedName, Op,
|
|
Package->RetInfo.ObjectType1, (Count - 1), 0, 0);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
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);
|
|
}
|