// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name : utdecode - Utility decoding routines ( value - to - string )
*
* Copyright ( C ) 2000 - 2025 , Intel Corp .
*
*****************************************************************************/
#include <acpi/acpi.h>
#include "accommon.h"
#include "acnamesp.h"
#include "amlcode.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utdecode" )
/*
* Properties of the ACPI Object Types , both internal and external .
* The table is indexed by values of acpi_object_type
*/
const u8 acpi_gbl_ns_properties[ACPI_NUM_NS_TYPES] = {
ACPI_NS_NORMAL, /* 00 Any */
ACPI_NS_NORMAL, /* 01 Number */
ACPI_NS_NORMAL, /* 02 String */
ACPI_NS_NORMAL, /* 03 Buffer */
ACPI_NS_NORMAL, /* 04 Package */
ACPI_NS_NORMAL, /* 05 field_unit */
ACPI_NS_NEWSCOPE, /* 06 Device */
ACPI_NS_NORMAL, /* 07 Event */
ACPI_NS_NEWSCOPE, /* 08 Method */
ACPI_NS_NORMAL, /* 09 Mutex */
ACPI_NS_NORMAL, /* 10 Region */
ACPI_NS_NEWSCOPE, /* 11 Power */
ACPI_NS_NEWSCOPE, /* 12 Processor */
ACPI_NS_NEWSCOPE, /* 13 Thermal */
ACPI_NS_NORMAL, /* 14 buffer_field */
ACPI_NS_NORMAL, /* 15 ddb_handle */
ACPI_NS_NORMAL, /* 16 Debug Object */
ACPI_NS_NORMAL, /* 17 def_field */
ACPI_NS_NORMAL, /* 18 bank_field */
ACPI_NS_NORMAL, /* 19 index_field */
ACPI_NS_NORMAL, /* 20 Reference */
ACPI_NS_NORMAL, /* 21 Alias */
ACPI_NS_NORMAL, /* 22 method_alias */
ACPI_NS_NORMAL, /* 23 Notify */
ACPI_NS_NORMAL, /* 24 Address Handler */
ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 25 Resource Desc */
ACPI_NS_NEWSCOPE | ACPI_NS_LOCAL, /* 26 Resource Field */
ACPI_NS_NEWSCOPE, /* 27 Scope */
ACPI_NS_NORMAL, /* 28 Extra */
ACPI_NS_NORMAL, /* 29 Data */
ACPI_NS_NORMAL /* 30 Invalid */
};
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_region_name
*
* PARAMETERS : Space ID - ID for the region
*
* RETURN : Decoded region space_id name
*
* DESCRIPTION : Translate a Space ID into a name string ( Debug only )
*
******************************************************************************/
/* Region type decoding */
const char *acpi_gbl_region_types[ACPI_NUM_PREDEFINED_REGIONS] = {
"SystemMemory" , /* 0x00 */
"SystemIO" , /* 0x01 */
"PCI_Config" , /* 0x02 */
"EmbeddedControl" , /* 0x03 */
"SMBus" , /* 0x04 */
"SystemCMOS" , /* 0x05 */
"PCIBARTarget" , /* 0x06 */
"IPMI" , /* 0x07 */
"GeneralPurposeIo" , /* 0x08 */
"GenericSerialBus" , /* 0x09 */
"PCC" , /* 0x0A */
"PlatformRtMechanism" /* 0x0B */
};
const char *acpi_ut_get_region_name(u8 space_id)
{
if (space_id >= ACPI_USER_REGION_BEGIN) {
return ("UserDefinedRegion" );
} else if (space_id == ACPI_ADR_SPACE_DATA_TABLE) {
return ("DataTable" );
} else if (space_id == ACPI_ADR_SPACE_FIXED_HARDWARE) {
return ("FunctionalFixedHW" );
} else if (space_id >= ACPI_NUM_PREDEFINED_REGIONS) {
return ("InvalidSpaceId" );
}
return (acpi_gbl_region_types[space_id]);
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_event_name
*
* PARAMETERS : event_id - Fixed event ID
*
* RETURN : Decoded event ID name
*
* DESCRIPTION : Translate a Event ID into a name string ( Debug only )
*
******************************************************************************/
/* Event type decoding */
static const char *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] = {
"PM_Timer" ,
"GlobalLock" ,
"PowerButton" ,
"SleepButton" ,
"RealTimeClock" ,
};
const char *acpi_ut_get_event_name(u32 event_id)
{
if (event_id > ACPI_EVENT_MAX) {
return ("InvalidEventID" );
}
return (acpi_gbl_event_types[event_id]);
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_type_name
*
* PARAMETERS : type - An ACPI object type
*
* RETURN : Decoded ACPI object type name
*
* DESCRIPTION : Translate a Type ID into a name string ( Debug only )
*
******************************************************************************/
/*
* Elements of acpi_gbl_ns_type_names below must match
* one - to - one with values of acpi_object_type
*
* The type ACPI_TYPE_ANY ( Untyped ) is used as a " don ' t care " when searching ;
* when stored in a table it really means that we have thus far seen no
* evidence to indicate what type is actually going to be stored for this
& entry .
*/
static const char acpi_gbl_bad_type[] = "UNDEFINED" ;
/* Printable names of the ACPI object types */
static const char *acpi_gbl_ns_type_names[] = {
/* 00 */ "Untyped",
/* 01 */ "Integer",
/* 02 */ "String",
/* 03 */ "Buffer",
/* 04 */ "Package",
/* 05 */ "FieldUnit",
/* 06 */ "Device",
/* 07 */ "Event",
/* 08 */ "Method",
/* 09 */ "Mutex",
/* 10 */ "Region",
/* 11 */ "Power",
/* 12 */ "Processor",
/* 13 */ "Thermal",
/* 14 */ "BufferField",
/* 15 */ "DdbHandle",
/* 16 */ "DebugObject",
/* 17 */ "RegionField",
/* 18 */ "BankField",
/* 19 */ "IndexField",
/* 20 */ "Reference",
/* 21 */ "Alias",
/* 22 */ "MethodAlias",
/* 23 */ "Notify",
/* 24 */ "AddrHandler",
/* 25 */ "ResourceDesc",
/* 26 */ "ResourceFld",
/* 27 */ "Scope",
/* 28 */ "Extra",
/* 29 */ "Data",
/* 30 */ "Invalid"
};
const char *acpi_ut_get_type_name(acpi_object_type type)
{
if (type > ACPI_TYPE_INVALID) {
return (acpi_gbl_bad_type);
}
return (acpi_gbl_ns_type_names[type]);
}
const char *acpi_ut_get_object_type_name(union acpi_operand_object *obj_desc)
{
ACPI_FUNCTION_TRACE(ut_get_object_type_name);
if (!obj_desc) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Null Object Descriptor\n" ));
return_STR("[NULL Object Descriptor]" );
}
/* These descriptor types share a common area */
if ((ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_OPERAND) &&
(ACPI_GET_DESCRIPTOR_TYPE(obj_desc) != ACPI_DESC_TYPE_NAMED)) {
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"Invalid object descriptor type: 0x%2.2X [%s] (%p)\n" ,
ACPI_GET_DESCRIPTOR_TYPE(obj_desc),
acpi_ut_get_descriptor_name(obj_desc),
obj_desc));
return_STR("Invalid object" );
}
return_STR(acpi_ut_get_type_name(obj_desc->common.type));
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_node_name
*
* PARAMETERS : object - A namespace node
*
* RETURN : ASCII name of the node
*
* DESCRIPTION : Validate the node and return the node ' s ACPI name .
*
******************************************************************************/
const char *acpi_ut_get_node_name(void *object)
{
struct acpi_namespace_node *node = (struct acpi_namespace_node *)object;
/* Must return a string of exactly 4 characters == ACPI_NAMESEG_SIZE */
if (!object) {
return ("NULL" );
}
/* Check for Root node */
if ((object == ACPI_ROOT_OBJECT) || (object == acpi_gbl_root_node)) {
return ("\" \\\" " );
}
/* Descriptor must be a namespace node */
if (ACPI_GET_DESCRIPTOR_TYPE(node) != ACPI_DESC_TYPE_NAMED) {
return ("####" );
}
/*
* Ensure name is valid . The name was validated / repaired when the node
* was created , but make sure it has not been corrupted .
*/
acpi_ut_repair_name(node->name.ascii);
/* Return the name */
return (node->name.ascii);
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_descriptor_name
*
* PARAMETERS : object - An ACPI object
*
* RETURN : Decoded name of the descriptor type
*
* DESCRIPTION : Validate object and return the descriptor type
*
******************************************************************************/
/* Printable names of object descriptor types */
static const char *acpi_gbl_desc_type_names[] = {
/* 00 */ "Not a Descriptor",
/* 01 */ "Cached Object",
/* 02 */ "State-Generic",
/* 03 */ "State-Update",
/* 04 */ "State-Package",
/* 05 */ "State-Control",
/* 06 */ "State-RootParseScope",
/* 07 */ "State-ParseScope",
/* 08 */ "State-WalkScope",
/* 09 */ "State-Result",
/* 10 */ "State-Notify",
/* 11 */ "State-Thread",
/* 12 */ "Tree Walk State",
/* 13 */ "Parse Tree Op",
/* 14 */ "Operand Object",
/* 15 */ "Namespace Node"
};
const char *acpi_ut_get_descriptor_name(void *object)
{
if (!object) {
return ("NULL OBJECT" );
}
if (ACPI_GET_DESCRIPTOR_TYPE(object) > ACPI_DESC_TYPE_MAX) {
return ("Not a Descriptor" );
}
return (acpi_gbl_desc_type_names[ACPI_GET_DESCRIPTOR_TYPE(object)]);
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_reference_name
*
* PARAMETERS : object - An ACPI reference object
*
* RETURN : Decoded name of the type of reference
*
* DESCRIPTION : Decode a reference object sub - type to a string .
*
******************************************************************************/
/* Printable names of reference object sub-types */
static const char *acpi_gbl_ref_class_names[] = {
/* 00 */ "Local",
/* 01 */ "Argument",
/* 02 */ "RefOf",
/* 03 */ "Index",
/* 04 */ "DdbHandle",
/* 05 */ "Named Object",
/* 06 */ "Debug"
};
const char *acpi_ut_get_reference_name(union acpi_operand_object *object)
{
if (!object) {
return ("NULL Object" );
}
if (ACPI_GET_DESCRIPTOR_TYPE(object) != ACPI_DESC_TYPE_OPERAND) {
return ("Not an Operand object" );
}
if (object->common.type != ACPI_TYPE_LOCAL_REFERENCE) {
return ("Not a Reference object" );
}
if (object->reference.class > ACPI_REFCLASS_MAX) {
return ("Unknown Reference class" );
}
return (acpi_gbl_ref_class_names[object->reference.class ]);
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_mutex_name
*
* PARAMETERS : mutex_id - The predefined ID for this mutex .
*
* RETURN : Decoded name of the internal mutex
*
* DESCRIPTION : Translate a mutex ID into a name string ( Debug only )
*
******************************************************************************/
/* Names for internal mutex objects, used for debug output */
static const char *acpi_gbl_mutex_names[ACPI_NUM_MUTEX] = {
"ACPI_MTX_Interpreter" ,
"ACPI_MTX_Namespace" ,
"ACPI_MTX_Tables" ,
"ACPI_MTX_Events" ,
"ACPI_MTX_Caches" ,
"ACPI_MTX_Memory" ,
};
const char *acpi_ut_get_mutex_name(u32 mutex_id)
{
if (mutex_id > ACPI_MAX_MUTEX) {
return ("Invalid Mutex ID" );
}
return (acpi_gbl_mutex_names[mutex_id]);
}
#if defined (ACPI_DEBUG_OUTPUT) || defined (ACPI_DEBUGGER)
/*
* Strings and procedures used for debug only
*/
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_notify_name
*
* PARAMETERS : notify_value - Value from the Notify ( ) request
*
* RETURN : Decoded name for the notify value
*
* DESCRIPTION : Translate a Notify Value to a notify namestring .
*
******************************************************************************/
/* Names for Notify() values, used for debug output */
static const char *acpi_gbl_generic_notify[ACPI_GENERIC_NOTIFY_MAX + 1 ] = {
/* 00 */ "Bus Check",
/* 01 */ "Device Check",
/* 02 */ "Device Wake",
/* 03 */ "Eject Request",
/* 04 */ "Device Check Light",
/* 05 */ "Frequency Mismatch",
/* 06 */ "Bus Mode Mismatch",
/* 07 */ "Power Fault",
/* 08 */ "Capabilities Check",
/* 09 */ "Device PLD Check",
/* 0A */ "Reserved",
/* 0B */ "System Locality Update",
/* 0C */ "Reserved (was previously Shutdown Request)",
/* Reserved in ACPI 6.0 */
/* 0D */ "System Resource Affinity Update",
/* 0E */ "Heterogeneous Memory Attributes Update",
/* ACPI 6.2 */
/* 0F */ "Error Disconnect Recover"
/* ACPI 6.3 */
};
static const char *acpi_gbl_device_notify[5 ] = {
/* 80 */ "Status Change",
/* 81 */ "Information Change",
/* 82 */ "Device-Specific Change",
/* 83 */ "Device-Specific Change",
/* 84 */ "Reserved"
};
static const char *acpi_gbl_processor_notify[5 ] = {
/* 80 */ "Performance Capability Change",
/* 81 */ "C-State Change",
/* 82 */ "Throttling Capability Change",
/* 83 */ "Guaranteed Change",
/* 84 */ "Minimum Excursion"
};
static const char *acpi_gbl_thermal_notify[5 ] = {
/* 80 */ "Thermal Status Change",
/* 81 */ "Thermal Trip Point Change",
/* 82 */ "Thermal Device List Change",
/* 83 */ "Thermal Relationship Change",
/* 84 */ "Reserved"
};
const char *acpi_ut_get_notify_name(u32 notify_value, acpi_object_type type)
{
/* 00 - 0F are "common to all object types" (from ACPI Spec) */
if (notify_value <= ACPI_GENERIC_NOTIFY_MAX) {
return (acpi_gbl_generic_notify[notify_value]);
}
/* 10 - 7F are reserved */
if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
return ("Reserved" );
}
/* 80 - 84 are per-object-type */
if (notify_value <= ACPI_SPECIFIC_NOTIFY_MAX) {
switch (type) {
case ACPI_TYPE_ANY:
case ACPI_TYPE_DEVICE:
return (acpi_gbl_device_notify[notify_value - 0 x80]);
case ACPI_TYPE_PROCESSOR:
return (acpi_gbl_processor_notify[notify_value - 0 x80]);
case ACPI_TYPE_THERMAL:
return (acpi_gbl_thermal_notify[notify_value - 0 x80]);
default :
return ("Target object type does not support notifies" );
}
}
/* 84 - BF are device-specific */
if (notify_value <= ACPI_MAX_DEVICE_SPECIFIC_NOTIFY) {
return ("Device-Specific" );
}
/* C0 and above are hardware-specific */
return ("Hardware-Specific" );
}
/*******************************************************************************
*
* FUNCTION : acpi_ut_get_argument_type_name
*
* PARAMETERS : arg_type - an ARGP_ * parser argument type
*
* RETURN : Decoded ARGP_ * type
*
* DESCRIPTION : Decode an ARGP_ * parser type , as defined in the amlcode . h file ,
* and used in the acopcode . h file . For example , ARGP_TERMARG .
* Used for debug only .
*
******************************************************************************/
static const char *acpi_gbl_argument_type[20 ] = {
/* 00 */ "Unknown ARGP",
/* 01 */ "ByteData",
/* 02 */ "ByteList",
/* 03 */ "CharList",
/* 04 */ "DataObject",
/* 05 */ "DataObjectList",
/* 06 */ "DWordData",
/* 07 */ "FieldList",
/* 08 */ "Name",
/* 09 */ "NameString",
/* 0A */ "ObjectList",
/* 0B */ "PackageLength",
/* 0C */ "SuperName",
/* 0D */ "Target",
/* 0E */ "TermArg",
/* 0F */ "TermList",
/* 10 */ "WordData",
/* 11 */ "QWordData",
/* 12 */ "SimpleName",
/* 13 */ "NameOrRef"
};
const char *acpi_ut_get_argument_type_name(u32 arg_type)
{
if (arg_type > ARGP_MAX) {
return ("Unknown ARGP" );
}
return (acpi_gbl_argument_type[arg_type]);
}
#endif
/*******************************************************************************
*
* FUNCTION : acpi_ut_valid_object_type
*
* PARAMETERS : type - Object type to be validated
*
* RETURN : TRUE if valid object type , FALSE otherwise
*
* DESCRIPTION : Validate an object type
*
******************************************************************************/
u8 acpi_ut_valid_object_type(acpi_object_type type)
{
if (type > ACPI_TYPE_LOCAL_MAX) {
/* Note: Assumes all TYPEs are contiguous (external/local) */
return (FALSE );
}
return (TRUE );
}
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