/******************************************************************************
*
* Module Name: utpredef - support functions for predefined names
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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 "acpi.h"
#include "accommon.h"
#include "acpredef.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("utpredef")
/*
* Names for the types that can be returned by the predefined objects.
* Used for warning messages. Must be in the same order as the ACPI_RTYPEs
*/
static const char *UtRtypeNames[] =
{
"/Integer",
"/String",
"/Buffer",
"/Package",
"/Reference",
};
/*******************************************************************************
*
* FUNCTION: AcpiUtGetNextPredefinedMethod
*
* PARAMETERS: ThisName - Entry in the predefined method/name table
*
* RETURN: Pointer to next entry in predefined table.
*
* DESCRIPTION: Get the next entry in the predefine method table. Handles the
* cases where a package info entry follows a method name that
* returns a package.
*
******************************************************************************/
const ACPI_PREDEFINED_INFO *
AcpiUtGetNextPredefinedMethod (
const ACPI_PREDEFINED_INFO *ThisName)
{
/*
* Skip next entry in the table if this name returns a Package
* (next entry contains the package info)
*/
if ((ThisName->Info.ExpectedBtypes & ACPI_RTYPE_PACKAGE) &&
(ThisName->Info.ExpectedBtypes != ACPI_RTYPE_ALL))
{
ThisName++;
}
ThisName++;
return (ThisName);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtMatchPredefinedMethod
*
* PARAMETERS: Name - Name to find
*
* RETURN: Pointer to entry in predefined table. NULL indicates not found.
*
* DESCRIPTION: Check an object name against the predefined object list.
*
******************************************************************************/
const ACPI_PREDEFINED_INFO *
AcpiUtMatchPredefinedMethod (
char *Name)
{
const ACPI_PREDEFINED_INFO *ThisName;
/* Quick check for a predefined name, first character must be underscore */
if (Name[0] != '_')
{
return (NULL);
}
/* Search info table for a predefined method/object name */
ThisName = AcpiGbl_PredefinedMethods;
while (ThisName->Info.Name[0])
{
if (ACPI_COMPARE_NAME (Name, ThisName->Info.Name))
{
return (ThisName);
}
ThisName = AcpiUtGetNextPredefinedMethod (ThisName);
}
return (NULL); /* Not found */
}
/*******************************************************************************
*
* FUNCTION: AcpiUtGetExpectedReturnTypes
*
* PARAMETERS: Buffer - Where the formatted string is returned
* ExpectedBTypes - Bitfield of expected data types
*
* RETURN: Formatted string in Buffer.
*
* DESCRIPTION: Format the expected object types into a printable string.
*
******************************************************************************/
void
AcpiUtGetExpectedReturnTypes (
char *Buffer,
UINT32 ExpectedBtypes)
{
UINT32 ThisRtype;
UINT32 i;
UINT32 j;
if (!ExpectedBtypes)
{
strcpy (Buffer, "NONE");
return;
}
j = 1;
Buffer[0] = 0;
ThisRtype = ACPI_RTYPE_INTEGER;
for (i = 0; i < ACPI_NUM_RTYPES; i++)
{
/* If one of the expected types, concatenate the name of this type */
if (ExpectedBtypes & ThisRtype)
{
strcat (Buffer, &UtRtypeNames[i][j]);
j = 0; /* Use name separator from now on */
}
ThisRtype <<= 1; /* Next Rtype */
}
}
/*******************************************************************************
*
* The remaining functions are used by iASL and AcpiHelp only
*
******************************************************************************/
#if (defined ACPI_ASL_COMPILER || defined ACPI_HELP_APP)
/* Local prototypes */
static UINT32
AcpiUtGetArgumentTypes (
char *Buffer,
UINT16 ArgumentTypes);
/* Types that can be returned externally by a predefined name */
static const char *UtExternalTypeNames[] = /* Indexed by ACPI_TYPE_* */
{
", UNSUPPORTED-TYPE",
", Integer",
", String",
", Buffer",
", Package"
};
/* Bit widths for resource descriptor predefined names */
static const char *UtResourceTypeNames[] =
{
"/1",
"/2",
"/3",
"/8",
"/16",
"/32",
"/64",
"/variable",
};
/*******************************************************************************
*
* FUNCTION: AcpiUtMatchResourceName
*
* PARAMETERS: Name - Name to find
*
* RETURN: Pointer to entry in the resource table. NULL indicates not
* found.
*
* DESCRIPTION: Check an object name against the predefined resource
* descriptor object list.
*
******************************************************************************/
const ACPI_PREDEFINED_INFO *
AcpiUtMatchResourceName (
char *Name)
{
const ACPI_PREDEFINED_INFO *ThisName;
/*
* Quick check for a predefined name, first character must
* be underscore
*/
if (Name[0] != '_')
{
return (NULL);
}
/* Search info table for a predefined method/object name */
ThisName = AcpiGbl_ResourceNames;
while (ThisName->Info.Name[0])
{
if (ACPI_COMPARE_NAME (Name, ThisName->Info.Name))
{
return (ThisName);
}
ThisName++;
}
return (NULL); /* Not found */
}
/*******************************************************************************
*
* FUNCTION: AcpiUtDisplayPredefinedMethod
*
* PARAMETERS: Buffer - Scratch buffer for this function
* ThisName - Entry in the predefined method/name table
* MultiLine - TRUE if output should be on >1 line
*
* RETURN: None
*
* DESCRIPTION: Display information about a predefined method. Number and
* type of the input arguments, and expected type(s) for the
* return value, if any.
*
******************************************************************************/
void
AcpiUtDisplayPredefinedMethod (
char *Buffer,
const ACPI_PREDEFINED_INFO *ThisName,
BOOLEAN MultiLine)
{
UINT32 ArgCount;
/*
* Get the argument count and the string buffer
* containing all argument types
*/
ArgCount = AcpiUtGetArgumentTypes (Buffer,
ThisName->Info.ArgumentList);
if (MultiLine)
{
printf (" ");
}
printf ("%4.4s Requires %s%u argument%s",
ThisName->Info.Name,
(ThisName->Info.ArgumentList & ARG_COUNT_IS_MINIMUM) ?
"(at least) " : "",
ArgCount, ArgCount != 1 ? "s" : "");
/* Display the types for any arguments */
if (ArgCount > 0)
{
printf (" (%s)", Buffer);
}
if (MultiLine)
{
printf ("\n ");
}
/* Get the return value type(s) allowed */
if (ThisName->Info.ExpectedBtypes)
{
AcpiUtGetExpectedReturnTypes (Buffer, ThisName->Info.ExpectedBtypes);
printf (" Return value types: %s\n", Buffer);
}
else
{
printf (" No return value\n");
}
}
/*******************************************************************************
*
* FUNCTION: AcpiUtGetArgumentTypes
*
* PARAMETERS: Buffer - Where to return the formatted types
* ArgumentTypes - Types field for this method
*
* RETURN: Count - the number of arguments required for this method
*
* DESCRIPTION: Format the required data types for this method (Integer,
* String, Buffer, or Package) and return the required argument
* count.
*
******************************************************************************/
static UINT32
AcpiUtGetArgumentTypes (
char *Buffer,
UINT16 ArgumentTypes)
{
UINT16 ThisArgumentType;
UINT16 SubIndex;
UINT16 ArgCount;
UINT32 i;
*Buffer = 0;
SubIndex = 2;
/* First field in the types list is the count of args to follow */
ArgCount = METHOD_GET_ARG_COUNT (ArgumentTypes);
if (ArgCount > METHOD_PREDEF_ARGS_MAX)
{
printf ("**** Invalid argument count (%u) "
"in predefined info structure\n", ArgCount);
return (ArgCount);
}
/* Get each argument from the list, convert to ascii, store to buffer */
for (i = 0; i < ArgCount; i++)
{
ThisArgumentType = METHOD_GET_NEXT_TYPE (ArgumentTypes);
if (!ThisArgumentType || (ThisArgumentType > METHOD_MAX_ARG_TYPE))
{
printf ("**** Invalid argument type (%u) "
"in predefined info structure\n", ThisArgumentType);
return (ArgCount);
}
strcat (Buffer, UtExternalTypeNames[ThisArgumentType] + SubIndex);
SubIndex = 0;
}
return (ArgCount);
}
/*******************************************************************************
*
* FUNCTION: AcpiUtGetResourceBitWidth
*
* PARAMETERS: Buffer - Where the formatted string is returned
* Types - Bitfield of expected data types
*
* RETURN: Count of return types. Formatted string in Buffer.
*
* DESCRIPTION: Format the resource bit widths into a printable string.
*
******************************************************************************/
UINT32
AcpiUtGetResourceBitWidth (
char *Buffer,
UINT16 Types)
{
UINT32 i;
UINT16 SubIndex;
UINT32 Found;
*Buffer = 0;
SubIndex = 1;
Found = 0;
for (i = 0; i < NUM_RESOURCE_WIDTHS; i++)
{
if (Types & 1)
{
strcat (Buffer, &(UtResourceTypeNames[i][SubIndex]));
SubIndex = 0;
Found++;
}
Types >>= 1;
}
return (Found);
}
#endif