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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/contrib/dev/acpica/common/dmextern.c |
/******************************************************************************
*
* Module Name: dmextern - Support for External() ASL statements
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/amlcode.h>
#include <contrib/dev/acpica/include/acnamesp.h>
#include <contrib/dev/acpica/include/acdisasm.h>
/*
* This module is used for application-level code (iASL disassembler) only.
*
* It contains the code to create and emit any necessary External() ASL
* statements for the module being disassembled.
*/
#define _COMPONENT ACPI_CA_DISASSEMBLER
ACPI_MODULE_NAME ("dmextern")
/*
* This table maps ACPI_OBJECT_TYPEs to the corresponding ASL
* ObjectTypeKeyword. Used to generate typed external declarations
*/
static const char *AcpiGbl_DmTypeNames[] =
{
/* 00 */ "", /* Type ANY */
/* 01 */ ", IntObj",
/* 02 */ ", StrObj",
/* 03 */ ", BuffObj",
/* 04 */ ", PkgObj",
/* 05 */ ", FieldUnitObj",
/* 06 */ ", DeviceObj",
/* 07 */ ", EventObj",
/* 08 */ ", MethodObj",
/* 09 */ ", MutexObj",
/* 10 */ ", OpRegionObj",
/* 11 */ ", PowerResObj",
/* 12 */ ", ProcessorObj",
/* 13 */ ", ThermalZoneObj",
/* 14 */ ", BuffFieldObj",
/* 15 */ ", DDBHandleObj",
/* 16 */ "", /* Debug object */
/* 17 */ ", FieldUnitObj",
/* 18 */ ", FieldUnitObj",
/* 19 */ ", FieldUnitObj"
};
/* Local prototypes */
static const char *
AcpiDmGetObjectTypeName (
ACPI_OBJECT_TYPE Type);
static char *
AcpiDmNormalizeParentPrefix (
ACPI_PARSE_OBJECT *Op,
char *Path);
/*******************************************************************************
*
* FUNCTION: AcpiDmGetObjectTypeName
*
* PARAMETERS: Type - An ACPI_OBJECT_TYPE
*
* RETURN: Pointer to a string
*
* DESCRIPTION: Map an object type to the ASL object type string.
*
******************************************************************************/
static const char *
AcpiDmGetObjectTypeName (
ACPI_OBJECT_TYPE Type)
{
if (Type == ACPI_TYPE_LOCAL_SCOPE)
{
Type = ACPI_TYPE_DEVICE;
}
else if (Type > ACPI_TYPE_LOCAL_INDEX_FIELD)
{
return ("");
}
return (AcpiGbl_DmTypeNames[Type]);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmNormalizeParentPrefix
*
* PARAMETERS: Op - Parse op
* Path - Path with parent prefix
*
* RETURN: The full pathname to the object (from the namespace root)
*
* DESCRIPTION: Returns the full pathname of a path with parent prefix
* The caller must free the fullpath returned.
*
******************************************************************************/
static char *
AcpiDmNormalizeParentPrefix (
ACPI_PARSE_OBJECT *Op,
char *Path)
{
ACPI_NAMESPACE_NODE *Node;
char *Fullpath;
char *ParentPath;
ACPI_SIZE Length;
/* Search upwards in the parse tree until we reach a namespace node */
while (Op)
{
if (Op->Common.Node)
{
break;
}
Op = Op->Common.Parent;
}
if (!Op)
{
return (NULL);
}
/*
* Find the actual parent node for the reference:
* Remove all carat prefixes from the input path.
* There may be multiple parent prefixes (For example, ^^^M000)
*/
Node = Op->Common.Node;
while (Node && (*Path == (UINT8) AML_PARENT_PREFIX))
{
Node = Node->Parent;
Path++;
}
if (!Node)
{
return (NULL);
}
/* Get the full pathname for the parent node */
ParentPath = AcpiNsGetExternalPathname (Node);
if (!ParentPath)
{
return (NULL);
}
Length = (ACPI_STRLEN (ParentPath) + ACPI_STRLEN (Path) + 1);
if (ParentPath[1])
{
/*
* If ParentPath is not just a simple '\', increment the length
* for the required dot separator (ParentPath.Path)
*/
Length++;
}
Fullpath = ACPI_ALLOCATE_ZEROED (Length);
if (!Fullpath)
{
goto Cleanup;
}
/*
* Concatenate parent fullpath and path. For example,
* parent fullpath "\_SB_", Path "^INIT", Fullpath "\_SB_.INIT"
*
* Copy the parent path
*/
ACPI_STRCAT (Fullpath, ParentPath);
/* Add dot separator (don't need dot if parent fullpath is a single "\") */
if (ParentPath[1])
{
ACPI_STRCAT (Fullpath, ".");
}
/* Copy child path (carat parent prefix(es) were skipped above) */
ACPI_STRCAT (Fullpath, Path);
Cleanup:
ACPI_FREE (ParentPath);
return (Fullpath);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmAddToExternalFileList
*
* PARAMETERS: PathList - Single path or list separated by comma
*
* RETURN: None
*
* DESCRIPTION: Add external files to global list
*
******************************************************************************/
ACPI_STATUS
AcpiDmAddToExternalFileList (
char *PathList)
{
ACPI_EXTERNAL_FILE *ExternalFile;
char *Path;
char *TmpPath;
if (!PathList)
{
return (AE_OK);
}
Path = strtok (PathList, ",");
while (Path)
{
TmpPath = ACPI_ALLOCATE_ZEROED (ACPI_STRLEN (Path) + 1);
if (!TmpPath)
{
return (AE_NO_MEMORY);
}
ACPI_STRCPY (TmpPath, Path);
ExternalFile = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_FILE));
if (!ExternalFile)
{
ACPI_FREE (TmpPath);
return (AE_NO_MEMORY);
}
ExternalFile->Path = TmpPath;
if (AcpiGbl_ExternalFileList)
{
ExternalFile->Next = AcpiGbl_ExternalFileList;
}
AcpiGbl_ExternalFileList = ExternalFile;
Path = strtok (NULL, ",");
}
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmClearExternalFileList
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Clear the external file list
*
******************************************************************************/
void
AcpiDmClearExternalFileList (
void)
{
ACPI_EXTERNAL_FILE *NextExternal;
while (AcpiGbl_ExternalFileList)
{
NextExternal = AcpiGbl_ExternalFileList->Next;
ACPI_FREE (AcpiGbl_ExternalFileList->Path);
ACPI_FREE (AcpiGbl_ExternalFileList);
AcpiGbl_ExternalFileList = NextExternal;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmAddToExternalList
*
* PARAMETERS: Op - Current parser Op
* Path - Internal (AML) path to the object
* Type - ACPI object type to be added
* Value - Arg count if adding a Method object
*
* RETURN: None
*
* DESCRIPTION: Insert a new name into the global list of Externals which
* will in turn be later emitted as an External() declaration
* in the disassembled output.
*
******************************************************************************/
void
AcpiDmAddToExternalList (
ACPI_PARSE_OBJECT *Op,
char *Path,
UINT8 Type,
UINT32 Value)
{
char *ExternalPath;
char *Fullpath = NULL;
ACPI_EXTERNAL_LIST *NewExternal;
ACPI_EXTERNAL_LIST *NextExternal;
ACPI_EXTERNAL_LIST *PrevExternal = NULL;
ACPI_STATUS Status;
if (!Path)
{
return;
}
/* Externalize the ACPI path */
Status = AcpiNsExternalizeName (ACPI_UINT32_MAX, Path,
NULL, &ExternalPath);
if (ACPI_FAILURE (Status))
{
return;
}
/* Get the full pathname from root if "Path" has a parent prefix */
if (*Path == (UINT8) AML_PARENT_PREFIX)
{
Fullpath = AcpiDmNormalizeParentPrefix (Op, ExternalPath);
if (Fullpath)
{
/* Set new external path */
ACPI_FREE (ExternalPath);
ExternalPath = Fullpath;
}
}
/* Check all existing externals to ensure no duplicates */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (!ACPI_STRCMP (ExternalPath, NextExternal->Path))
{
/* Duplicate method, check that the Value (ArgCount) is the same */
if ((NextExternal->Type == ACPI_TYPE_METHOD) &&
(NextExternal->Value != Value))
{
ACPI_ERROR ((AE_INFO,
"Argument count mismatch for method %s %u %u",
NextExternal->Path, NextExternal->Value, Value));
}
/* Allow upgrade of type from ANY */
else if (NextExternal->Type == ACPI_TYPE_ANY)
{
NextExternal->Type = Type;
NextExternal->Value = Value;
}
ACPI_FREE (ExternalPath);
return;
}
NextExternal = NextExternal->Next;
}
/* Allocate and init a new External() descriptor */
NewExternal = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_EXTERNAL_LIST));
if (!NewExternal)
{
ACPI_FREE (ExternalPath);
return;
}
NewExternal->Path = ExternalPath;
NewExternal->Type = Type;
NewExternal->Value = Value;
NewExternal->Length = (UINT16) ACPI_STRLEN (ExternalPath);
/* Was the external path with parent prefix normalized to a fullpath? */
if (Fullpath == ExternalPath)
{
/* Get new internal path */
Status = AcpiNsInternalizeName (ExternalPath, &Path);
if (ACPI_FAILURE (Status))
{
ACPI_FREE (ExternalPath);
ACPI_FREE (NewExternal);
return;
}
/* Set flag to indicate External->InternalPath need to be freed */
NewExternal->Flags |= ACPI_IPATH_ALLOCATED;
}
NewExternal->InternalPath = Path;
/* Link the new descriptor into the global list, ordered by string length */
NextExternal = AcpiGbl_ExternalList;
while (NextExternal)
{
if (NewExternal->Length <= NextExternal->Length)
{
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
NewExternal->Next = NextExternal;
return;
}
PrevExternal = NextExternal;
NextExternal = NextExternal->Next;
}
if (PrevExternal)
{
PrevExternal->Next = NewExternal;
}
else
{
AcpiGbl_ExternalList = NewExternal;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmAddExternalsToNamespace
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Add all externals to the namespace. Allows externals to be
* "resolved".
*
******************************************************************************/
void
AcpiDmAddExternalsToNamespace (
void)
{
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *Node;
ACPI_OPERAND_OBJECT *MethodDesc;
ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
while (External)
{
/* Add the external name (object) into the namespace */
Status = AcpiNsLookup (NULL, External->InternalPath, External->Type,
ACPI_IMODE_LOAD_PASS1,
ACPI_NS_EXTERNAL | ACPI_NS_DONT_OPEN_SCOPE,
NULL, &Node);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"while adding external to namespace [%s]",
External->Path));
}
else if (External->Type == ACPI_TYPE_METHOD)
{
/* For methods, we need to save the argument count */
MethodDesc = AcpiUtCreateInternalObject (ACPI_TYPE_METHOD);
MethodDesc->Method.ParamCount = (UINT8) External->Value;
Node->Object = MethodDesc;
}
External = External->Next;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmGetExternalMethodCount
*
* PARAMETERS: None
*
* RETURN: The number of control method externals in the external list
*
* DESCRIPTION: Return the number of method externals that have been generated.
* If any control method externals have been found, we must
* re-parse the entire definition block with the new information
* (number of arguments for the methods.) This is limitation of
* AML, we don't know the number of arguments from the control
* method invocation itself.
*
******************************************************************************/
UINT32
AcpiDmGetExternalMethodCount (
void)
{
ACPI_EXTERNAL_LIST *External = AcpiGbl_ExternalList;
UINT32 Count = 0;
while (External)
{
if (External->Type == ACPI_TYPE_METHOD)
{
Count++;
}
External = External->Next;
}
return (Count);
}
/*******************************************************************************
*
* FUNCTION: AcpiDmClearExternalList
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Free the entire External info list
*
******************************************************************************/
void
AcpiDmClearExternalList (
void)
{
ACPI_EXTERNAL_LIST *NextExternal;
while (AcpiGbl_ExternalList)
{
NextExternal = AcpiGbl_ExternalList->Next;
ACPI_FREE (AcpiGbl_ExternalList->Path);
ACPI_FREE (AcpiGbl_ExternalList);
AcpiGbl_ExternalList = NextExternal;
}
}
/*******************************************************************************
*
* FUNCTION: AcpiDmEmitExternals
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Emit an External() ASL statement for each of the externals in
* the global external info list.
*
******************************************************************************/
void
AcpiDmEmitExternals (
void)
{
ACPI_EXTERNAL_LIST *NextExternal;
if (!AcpiGbl_ExternalList)
{
return;
}
/*
* Walk the list of externals (unresolved references)
* found during the AML parsing
*/
while (AcpiGbl_ExternalList)
{
AcpiOsPrintf (" External (%s%s",
AcpiGbl_ExternalList->Path,
AcpiDmGetObjectTypeName (AcpiGbl_ExternalList->Type));
if (AcpiGbl_ExternalList->Type == ACPI_TYPE_METHOD)
{
AcpiOsPrintf (") // %u Arguments\n",
AcpiGbl_ExternalList->Value);
}
else
{
AcpiOsPrintf (")\n");
}
/* Free this external info block and move on to next external */
NextExternal = AcpiGbl_ExternalList->Next;
if (AcpiGbl_ExternalList->Flags & ACPI_IPATH_ALLOCATED)
{
ACPI_FREE (AcpiGbl_ExternalList->InternalPath);
}
ACPI_FREE (AcpiGbl_ExternalList->Path);
ACPI_FREE (AcpiGbl_ExternalList);
AcpiGbl_ExternalList = NextExternal;
}
AcpiOsPrintf ("\n");
}