utglobal.c

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/* Event type decoding */

const NATIVE_CHAR *acpi_gbl_event_types[ACPI_NUM_FIXED_EVENTS] =
{
	"PM_Timer",
	"Global_lock",
	"Power_button",
	"Sleep_button",
	"Real_time_clock",
};


NATIVE_CHAR *
acpi_ut_get_event_name (
	u32                     event_id)
{

	if (event_id > ACPI_EVENT_MAX)
	{
		return ("Invalid_event_iD");
	}

	return ((NATIVE_CHAR *) acpi_gbl_event_types[event_id]);
}


#ifdef ACPI_DEBUG

/*
 * Strings and procedures used for debug only
 *
 */


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_get_mutex_name
 *
 * PARAMETERS:  None.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Translate a mutex ID into a name string (Debug only)
 *
 ****************************************************************************/

NATIVE_CHAR *
acpi_ut_get_mutex_name (
	u32                     mutex_id)
{

	if (mutex_id > MAX_MTX)
	{
		return ("Invalid Mutex ID");
	}

	return (acpi_gbl_mutex_names[mutex_id]);
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_get_type_name
 *
 * PARAMETERS:  None.
 *
 * RETURN:      Status
 *
 * 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
 * indicatewhat type is actually going to be stored for this entry.
 */

static const NATIVE_CHAR    acpi_gbl_bad_type[] = "UNDEFINED";
#define TYPE_NAME_LENGTH    12                           /* Maximum length of each string */

static const NATIVE_CHAR    *acpi_gbl_ns_type_names[] = /* printable names of ACPI types */
{
	/* 00 */ "Untyped",
	/* 01 */ "Integer",
	/* 02 */ "String",
	/* 03 */ "Buffer",
	/* 04 */ "Package",
	/* 05 */ "Field_unit",
	/* 06 */ "Device",
	/* 07 */ "Event",
	/* 08 */ "Method",
	/* 09 */ "Mutex",
	/* 10 */ "Region",
	/* 11 */ "Power",
	/* 12 */ "Processor",
	/* 13 */ "Thermal",
	/* 14 */ "Buffer_field",
	/* 15 */ "Ddb_handle",
	/* 16 */ "Debug_object",
	/* 17 */ "Region_field",
	/* 18 */ "Bank_field",
	/* 19 */ "Index_field",
	/* 20 */ "Reference",
	/* 21 */ "Alias",
	/* 22 */ "Notify",
	/* 23 */ "Addr_handler",
	/* 24 */ "Resource_desc",
	/* 25 */ "Resource_fld",
	/* 26 */ "Region_fld_dfn",
	/* 27 */ "Bank_fld_dfn",
	/* 28 */ "Index_fld_dfn",
	/* 29 */ "If",
	/* 30 */ "Else",
	/* 31 */ "While",
	/* 32 */ "Scope",
	/* 33 */ "Def_any",
	/* 34 */ "Extra",
	/* 35 */ "Data",
	/* 36 */ "Invalid"
};


NATIVE_CHAR *
acpi_ut_get_type_name (
	acpi_object_type        type)
{

	if (type > INTERNAL_TYPE_INVALID)
	{
		return ((NATIVE_CHAR *) acpi_gbl_bad_type);
	}

	return ((NATIVE_CHAR *) acpi_gbl_ns_type_names[type]);
}


/* Data used in keeping track of fields */

const NATIVE_CHAR *acpi_gbl_FEnames[NUM_FIELD_NAMES] =
{
	"skip",
	"?access?"
};              /* FE = Field Element */


const NATIVE_CHAR *acpi_gbl_match_ops[NUM_MATCH_OPS] =
{
	"Error",
	"MTR",
	"MEQ",
	"MLE",
	"MLT",
	"MGE",
	"MGT"
};


/* Access type decoding */

const NATIVE_CHAR *acpi_gbl_access_types[NUM_ACCESS_TYPES] =
{
	"Any_acc",
	"Byte_acc",
	"Word_acc",
	"DWord_acc",
	"QWord_acc",
	"Buffer_acc",
};


/* Update rule decoding */

const NATIVE_CHAR *acpi_gbl_update_rules[NUM_UPDATE_RULES] =
{
	"Preserve",
	"Write_as_ones",
	"Write_as_zeros"
};

#endif


/*****************************************************************************
 *
 * FUNCTION:    Acpi_ut_valid_object_type
 *
 * PARAMETERS:  None.
 *
 * RETURN:      TRUE if valid object type
 *
 * DESCRIPTION: Validate an object type
 *
 ****************************************************************************/

u8
acpi_ut_valid_object_type (
	acpi_object_type        type)
{

	if (type > ACPI_TYPE_MAX)
	{
		if ((type < INTERNAL_TYPE_BEGIN) ||
			(type > INTERNAL_TYPE_MAX))
		{
			return (FALSE);
		}
	}

	return (TRUE);
}


/****************************************************************************
 *
 * FUNCTION:    Acpi_ut_allocate_owner_id
 *
 * PARAMETERS:  Id_type         - Type of ID (method or table)
 *
 * DESCRIPTION: Allocate a table or method owner id
 *
 ***************************************************************************/

acpi_owner_id
acpi_ut_allocate_owner_id (
	u32                     id_type)
{
	acpi_owner_id           owner_id = 0xFFFF;


	ACPI_FUNCTION_TRACE ("Ut_allocate_owner_id");


	if (ACPI_FAILURE (acpi_ut_acquire_mutex (ACPI_MTX_CACHES)))
	{
		return (0);
	}

	switch (id_type)
	{
	case ACPI_OWNER_TYPE_TABLE:

		owner_id = acpi_gbl_next_table_owner_id;
		acpi_gbl_next_table_owner_id++;

		if (acpi_gbl_next_table_owner_id == ACPI_FIRST_METHOD_ID)
		{
			acpi_gbl_next_table_owner_id = ACPI_FIRST_TABLE_ID;
		}
		break;


	case ACPI_OWNER_TYPE_METHOD:

		owner_id = acpi_gbl_next_method_owner_id;
		acpi_gbl_next_method_owner_id++;

		if (acpi_gbl_next_method_owner_id == ACPI_FIRST_TABLE_ID)
		{
			acpi_gbl_next_method_owner_id = ACPI_FIRST_METHOD_ID;
		}
		break;
	}

	(void) acpi_ut_release_mutex (ACPI_MTX_CACHES);
	return_VALUE (owner_id);
}


/****************************************************************************
 *
 * FUNCTION:    Acpi_ut_init_globals
 *
 * PARAMETERS:  none
 *
 * DESCRIPTION: Init library globals.  All globals that require specific
 *              initialization should be initialized here!
 *
 ***************************************************************************/

void
acpi_ut_init_globals (
	void)
{
	u32                     i;


	ACPI_FUNCTION_TRACE ("Ut_init_globals");

	/* Memory allocation and cache lists */

	ACPI_MEMSET (acpi_gbl_memory_lists, 0, sizeof (ACPI_MEMORY_LIST) * ACPI_NUM_MEM_LISTS);

	acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].link_offset      = (u16) ACPI_PTR_DIFF (&(((acpi_generic_state *) NULL)->common.next), NULL);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].link_offset     = (u16) ACPI_PTR_DIFF (&(((acpi_parse_object *) NULL)->next), NULL);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].link_offset = (u16) ACPI_PTR_DIFF (&(((acpi_parse2_object *) NULL)->next), NULL);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].link_offset    = (u16) ACPI_PTR_DIFF (&(((acpi_operand_object *) NULL)->cache.next), NULL);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].link_offset       = (u16) ACPI_PTR_DIFF (&(((acpi_walk_state *) NULL)->next), NULL);

	acpi_gbl_memory_lists[ACPI_MEM_LIST_NSNODE].object_size     = sizeof (acpi_namespace_node);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].object_size      = sizeof (acpi_generic_state);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].object_size     = sizeof (acpi_parse_object);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].object_size = sizeof (acpi_parse2_object);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].object_size    = sizeof (acpi_operand_object);
	acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].object_size       = sizeof (acpi_walk_state);

	acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].max_cache_depth  = MAX_STATE_CACHE_DEPTH;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].max_cache_depth = MAX_PARSE_CACHE_DEPTH;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].max_cache_depth = MAX_EXTPARSE_CACHE_DEPTH;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].max_cache_depth = MAX_OBJECT_CACHE_DEPTH;
	acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].max_cache_depth   = MAX_WALK_CACHE_DEPTH;

	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_GLOBAL].list_name    = "Global Memory Allocation");
	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_NSNODE].list_name    = "Namespace Nodes");
	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_STATE].list_name     = "State Object Cache");
	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE].list_name    = "Parse Node Cache");
	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_PSNODE_EXT].list_name = "Extended Parse Node Cache");
	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_OPERAND].list_name   = "Operand Object Cache");
	ACPI_MEM_TRACKING (acpi_gbl_memory_lists[ACPI_MEM_LIST_WALK].list_name      = "Tree Walk Node Cache");

	/* ACPI table structure */

	for (i = 0; i < NUM_ACPI_TABLES; i++)
	{
		acpi_gbl_acpi_tables[i].prev        = &acpi_gbl_acpi_tables[i];
		acpi_gbl_acpi_tables[i].next        = &acpi_gbl_acpi_tables[i];
		acpi_gbl_acpi_tables[i].pointer     = NULL;
		acpi_gbl_acpi_tables[i].length      = 0;
		acpi_gbl_acpi_tables[i].allocation  = ACPI_MEM_NOT_ALLOCATED;
		acpi_gbl_acpi_tables[i].count       = 0;
	}

	/* Mutex locked flags */

	for (i = 0; i < NUM_MTX; i++)
	{
		acpi_gbl_acpi_mutex_info[i].mutex   = NULL;
		acpi_gbl_acpi_mutex_info[i].owner_id = ACPI_MUTEX_NOT_ACQUIRED;
		acpi_gbl_acpi_mutex_info[i].use_count = 0;
	}

	/* Global notify handlers */

	acpi_gbl_sys_notify.handler         = NULL;
	acpi_gbl_drv_notify.handler         = NULL;

	/* Global "typed" ACPI table pointers */

	acpi_gbl_RSDP                       = NULL;
	acpi_gbl_XSDT                       = NULL;
	acpi_gbl_FACS                       = NULL;
	acpi_gbl_FADT                       = NULL;
	acpi_gbl_DSDT                       = NULL;

	/* Global Lock support */

	acpi_gbl_global_lock_acquired       = FALSE;
	acpi_gbl_global_lock_thread_count   = 0;
	acpi_gbl_global_lock_handle         = 0;

	/* Miscellaneous variables */

	acpi_gbl_table_flags                = ACPI_PHYSICAL_POINTER;
	acpi_gbl_rsdp_original_location     = 0;
	acpi_gbl_cm_single_step             = FALSE;
	acpi_gbl_db_terminate_threads       = FALSE;
	acpi_gbl_shutdown                   = FALSE;
	acpi_gbl_ns_lookup_count            = 0;
	acpi_gbl_ps_find_count              = 0;
	acpi_gbl_acpi_hardware_present      = TRUE;
	acpi_gbl_next_table_owner_id        = ACPI_FIRST_TABLE_ID;
	acpi_gbl_next_method_owner_id       = ACPI_FIRST_METHOD_ID;
	acpi_gbl_debugger_configuration     = DEBUGGER_THREADING;
	acpi_gbl_db_output_flags            = ACPI_DB_CONSOLE_OUTPUT;

	/* Hardware oriented */

	acpi_gbl_gpe_register_info          = NULL;
	acpi_gbl_gpe_number_info            = NULL;

	/* Namespace */

	acpi_gbl_root_node                  = NULL;

	acpi_gbl_root_node_struct.name.integer = ACPI_ROOT_NAME;
	acpi_gbl_root_node_struct.descriptor = ACPI_DESC_TYPE_NAMED;
	acpi_gbl_root_node_struct.type      = ACPI_TYPE_ANY;
	acpi_gbl_root_node_struct.child     = NULL;
	acpi_gbl_root_node_struct.peer      = NULL;
	acpi_gbl_root_node_struct.object    = NULL;
	acpi_gbl_root_node_struct.flags     = ANOBJ_END_OF_PEER_LIST;


#ifdef ACPI_DEBUG
	acpi_gbl_lowest_stack_pointer       = ACPI_UINT32_MAX;
#endif

	return_VOID;
}