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Diffstat (limited to 'source/compiler/aslprepkg.c')
| -rw-r--r-- | source/compiler/aslprepkg.c | 661 |
1 files changed, 661 insertions, 0 deletions
diff --git a/source/compiler/aslprepkg.c b/source/compiler/aslprepkg.c new file mode 100644 index 000000000000..e8434d529256 --- /dev/null +++ b/source/compiler/aslprepkg.c @@ -0,0 +1,661 @@ +/****************************************************************************** + * + * Module Name: aslprepkg - support for ACPI predefined name package objects + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2013, 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. + */ + +#include "aslcompiler.h" +#include "aslcompiler.y.h" +#include "acpredef.h" + + +#define _COMPONENT ACPI_COMPILER + ACPI_MODULE_NAME ("aslprepkg") + + +/* Local prototypes */ + +static void +ApCheckPackageElements ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *Op, + UINT8 Type1, + UINT32 Count1, + UINT8 Type2, + UINT32 Count2); + +static void +ApCheckPackageList ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *ParentOp, + const ACPI_PREDEFINED_INFO *Package, + UINT32 StartIndex, + UINT32 Count); + +static void +ApPackageTooSmall ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *Op, + UINT32 Count, + UINT32 ExpectedCount); + +static void +ApZeroLengthPackage ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *Op); + +static void +ApPackageTooLarge ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *Op, + UINT32 Count, + UINT32 ExpectedCount); + + +/******************************************************************************* + * + * FUNCTION: ApCheckPackage + * + * PARAMETERS: ParentOp - Parser op for the package + * Predefined - Pointer to package-specific info for method + * + * RETURN: None + * + * DESCRIPTION: Top-level validation for predefined name return package + * objects. + * + ******************************************************************************/ + +void +ApCheckPackage ( + ACPI_PARSE_OBJECT *ParentOp, + const ACPI_PREDEFINED_INFO *Predefined) +{ + ACPI_PARSE_OBJECT *Op; + const ACPI_PREDEFINED_INFO *Package; + ACPI_STATUS Status; + UINT32 ExpectedCount; + UINT32 Count; + UINT32 i; + + + /* The package info for this name is in the next table entry */ + + Package = Predefined + 1; + + /* First child is the package length */ + + Op = ParentOp->Asl.Child; + Count = (UINT32) Op->Asl.Value.Integer; + + /* + * Most packages must have at least one element. The only exception + * is the variable-length package (ACPI_PTYPE1_VAR). + */ + if (!Count) + { + if (Package->RetInfo.Type != ACPI_PTYPE1_VAR) + { + ApZeroLengthPackage (Predefined->Info.Name, ParentOp); + } + return; + } + + /* Get the first element of the package */ + + Op = Op->Asl.Next; + + /* Decode the package type */ + + switch (Package->RetInfo.Type) + { + case ACPI_PTYPE1_FIXED: + /* + * The package count is fixed and there are no sub-packages + * + * If package is too small, exit. + * If package is larger than expected, issue warning but continue + */ + ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; + if (Count < ExpectedCount) + { + goto PackageTooSmall; + } + else if (Count > ExpectedCount) + { + ApPackageTooLarge (Predefined->Info.Name, ParentOp, + Count, ExpectedCount); + } + + /* Validate all elements of the package */ + + ApCheckPackageElements (Predefined->Info.Name, Op, + Package->RetInfo.ObjectType1, Package->RetInfo.Count1, + Package->RetInfo.ObjectType2, Package->RetInfo.Count2); + break; + + case ACPI_PTYPE1_VAR: + /* + * The package count is variable, there are no sub-packages, and all + * elements must be of the same type + */ + for (i = 0; i < Count; i++) + { + ApCheckObjectType (Predefined->Info.Name, Op, + Package->RetInfo.ObjectType1, i); + Op = Op->Asl.Next; + } + break; + + case ACPI_PTYPE1_OPTION: + /* + * The package count is variable, there are no sub-packages. There are + * a fixed number of required elements, and a variable number of + * optional elements. + * + * Check if package is at least as large as the minimum required + */ + ExpectedCount = Package->RetInfo3.Count; + if (Count < ExpectedCount) + { + goto PackageTooSmall; + } + + /* Variable number of sub-objects */ + + for (i = 0; i < Count; i++) + { + if (i < Package->RetInfo3.Count) + { + /* These are the required package elements (0, 1, or 2) */ + + ApCheckObjectType (Predefined->Info.Name, Op, + Package->RetInfo3.ObjectType[i], i); + } + else + { + /* These are the optional package elements */ + + ApCheckObjectType (Predefined->Info.Name, Op, + Package->RetInfo3.TailObjectType, i); + } + Op = Op->Asl.Next; + } + break; + + case ACPI_PTYPE2_REV_FIXED: + + /* First element is the (Integer) revision */ + + ApCheckObjectType (Predefined->Info.Name, Op, + ACPI_RTYPE_INTEGER, 0); + + Op = Op->Asl.Next; + Count--; + + /* Examine the sub-packages */ + + ApCheckPackageList (Predefined->Info.Name, Op, + Package, 1, Count); + break; + + case ACPI_PTYPE2_PKG_COUNT: + + /* First element is the (Integer) count of sub-packages to follow */ + + Status = ApCheckObjectType (Predefined->Info.Name, Op, + ACPI_RTYPE_INTEGER, 0); + + /* We must have an integer count from above (otherwise, use Count) */ + + if (ACPI_SUCCESS (Status)) + { + /* + * Count cannot be larger than the parent package length, but allow it + * to be smaller. The >= accounts for the Integer above. + */ + ExpectedCount = (UINT32) Op->Asl.Value.Integer; + if (ExpectedCount >= Count) + { + goto PackageTooSmall; + } + + Count = ExpectedCount; + } + + Op = Op->Asl.Next; + + /* Examine the sub-packages */ + + ApCheckPackageList (Predefined->Info.Name, Op, + Package, 1, Count); + break; + + case ACPI_PTYPE2: + case ACPI_PTYPE2_FIXED: + case ACPI_PTYPE2_MIN: + case ACPI_PTYPE2_COUNT: + case ACPI_PTYPE2_FIX_VAR: + /* + * These types all return a single Package that consists of a + * variable number of sub-Packages. + */ + + /* Examine the sub-packages */ + + ApCheckPackageList (Predefined->Info.Name, Op, + Package, 0, Count); + break; + + default: + return; + } + + return; + +PackageTooSmall: + ApPackageTooSmall (Predefined->Info.Name, ParentOp, + Count, ExpectedCount); +} + + +/******************************************************************************* + * + * FUNCTION: ApCheckPackageElements + * + * PARAMETERS: PredefinedName - Pointer to validation data structure + * Op - Parser op for the package + * Type1 - Object type for first group + * Count1 - Count for first group + * Type2 - Object type for second group + * Count2 - Count for second group + * + * RETURN: None + * + * DESCRIPTION: Validate all elements of a package. Works with packages that + * are defined to contain up to two groups of different object + * types. + * + ******************************************************************************/ + +static void +ApCheckPackageElements ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *Op, + UINT8 Type1, + UINT32 Count1, + UINT8 Type2, + UINT32 Count2) +{ + UINT32 i; + + + /* + * Up to two groups of package elements are supported by the data + * structure. All elements in each group must be of the same type. + * The second group can have a count of zero. + * + * Aborts check upon a NULL package element, as this means (at compile + * time) that the remainder of the package elements are also NULL + * (This is the only way to create NULL package elements.) + */ + for (i = 0; (i < Count1) && Op; i++) + { + ApCheckObjectType (PredefinedName, Op, Type1, i); + Op = Op->Asl.Next; + } + + for (i = 0; (i < Count2) && Op; i++) + { + ApCheckObjectType (PredefinedName, Op, Type2, (i + Count1)); + Op = Op->Asl.Next; + } +} + + +/******************************************************************************* + * + * FUNCTION: ApCheckPackageList + * + * PARAMETERS: PredefinedName - Name of the predefined object + * ParentOp - Parser op of the parent package + * Package - Package info for this predefined name + * StartIndex - Index in parent package where list begins + * ParentCount - Element count of parent package + * + * RETURN: None + * + * DESCRIPTION: Validate the individual package elements for a predefined name. + * Handles the cases where the predefined name is defined as a + * Package of Packages (subpackages). These are the types: + * + * ACPI_PTYPE2 + * ACPI_PTYPE2_FIXED + * ACPI_PTYPE2_MIN + * ACPI_PTYPE2_COUNT + * ACPI_PTYPE2_FIX_VAR + * + ******************************************************************************/ + +static void +ApCheckPackageList ( + const char *PredefinedName, + ACPI_PARSE_OBJECT *ParentOp, + const ACPI_PREDEFINED_INFO *Package, + UINT32 StartIndex, + UINT32 ParentCount) +{ + ACPI_PARSE_OBJECT *SubPackageOp = ParentOp; + ACPI_PARSE_OBJECT *Op; + ACPI_STATUS Status; + UINT32 Count; + UINT32 ExpectedCount; + UINT32 i; + UINT32 j; + + + /* + * Validate each subpackage in the parent Package + * + * Note: We ignore NULL package elements on the assumption that + * they will be initialized by the BIOS or other ASL code. + */ + for (i = 0; (i < ParentCount) && SubPackageOp; i++) + { + /* Each object in the list must be of type Package */ + + Status = ApCheckObjectType (PredefinedName, SubPackageOp, + ACPI_RTYPE_PACKAGE, i + StartIndex); + if (ACPI_FAILURE (Status)) + { + goto NextSubpackage; + } + + /* Examine the different types of expected subpackages */ + + Op = SubPackageOp->Asl.Child; + + /* First child is the package length */ + + Count = (UINT32) Op->Asl.Value.Integer; + Op = Op->Asl.Next; + + /* The subpackage must have at least one element */ + + if (!Count) + { + ApZeroLengthPackage (PredefinedName, SubPackageOp); + goto NextSubpackage; + } + + /* + * Decode the package type. + * PTYPE2 indicates that a "package of packages" is expected for + * this name. The various flavors of PTYPE2 indicate the number + * and format of the subpackages. + */ + switch (Package->RetInfo.Type) + { + case ACPI_PTYPE2: + case ACPI_PTYPE2_PKG_COUNT: + case ACPI_PTYPE2_REV_FIXED: + + /* Each subpackage has a fixed number of elements */ + + ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; + if (Count < ExpectedCount) + { + ApPackageTooSmall (PredefinedName, SubPackageOp, + Count, ExpectedCount); + break; + } + + ApCheckPackageElements (PredefinedName, Op, + Package->RetInfo.ObjectType1, Package->RetInfo.Count1, + Package->RetInfo.ObjectType2, Package->RetInfo.Count2); + break; + + case ACPI_PTYPE2_FIX_VAR: + /* + * Each subpackage has a fixed number of elements and an + * optional element + */ + ExpectedCount = Package->RetInfo.Count1 + Package->RetInfo.Count2; + if (Count < ExpectedCount) + { + ApPackageTooSmall (PredefinedName, SubPackageOp, + Count, ExpectedCount); + break; + } + + ApCheckPackageElements (PredefinedName, Op, + Package->RetInfo.ObjectType1, Package->RetInfo.Count1, + Package->RetInfo.ObjectType2, + Count - Package->RetInfo.Count1); + break; + + case ACPI_PTYPE2_FIXED: + + /* Each sub-package has a fixed length */ + + ExpectedCount = Package->RetInfo2.Count; + if (Count < ExpectedCount) + { + ApPackageTooSmall (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 sub-package has a variable but minimum length */ + + ExpectedCount = Package->RetInfo.Count1; + if (Count < ExpectedCount) + { + ApPackageTooSmall (PredefinedName, SubPackageOp, + Count, ExpectedCount); + break; + } + + /* Check the type of each sub-package 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 sub-package 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); +} |