cmglobal.c

winNT技术操作系统,国外开放的原代码和LIUX一样

u8
acpi_cm_valid_object_type (
	u32                     type)
{

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

	return (TRUE);
}


/*****************************************************************************
 *
 * FUNCTION:    Acpi_cm_format_exception
 *
 * PARAMETERS:  Status              - Acpi status to be formatted
 *
 * RETURN:      Formatted status string
 *
 * DESCRIPTION: Convert an ACPI exception to a string
 *
 ****************************************************************************/

NATIVE_CHAR *
acpi_cm_format_exception (
	ACPI_STATUS             status)
{
	NATIVE_CHAR             *exception = "UNKNOWN_STATUS";
	ACPI_STATUS             sub_status;


	sub_status = (status & ~AE_CODE_MASK);


	switch (status & AE_CODE_MASK)
	{
	case AE_CODE_ENVIRONMENTAL:

		if (sub_status <= AE_CODE_ENV_MAX)
		{
			exception = acpi_gbl_exception_names_env [sub_status];
		}
		break;

	case AE_CODE_PROGRAMMER:

		if (sub_status <= AE_CODE_PGM_MAX)
		{
			exception = acpi_gbl_exception_names_pgm [sub_status -1];
		}
		break;

	case AE_CODE_ACPI_TABLES:

		if (sub_status <= AE_CODE_TBL_MAX)
		{
			exception = acpi_gbl_exception_names_tbl [sub_status -1];
		}
		break;

	case AE_CODE_AML:

		if (sub_status <= AE_CODE_AML_MAX)
		{
			exception = acpi_gbl_exception_names_aml [sub_status -1];
		}
		break;

	case AE_CODE_CONTROL:

		if (sub_status <= AE_CODE_CTRL_MAX)
		{
			exception = acpi_gbl_exception_names_ctrl [sub_status -1];
		}
		break;

	default:
		break;
	}


	return (exception);
}


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

ACPI_OWNER_ID
acpi_cm_allocate_owner_id (
	u32                     id_type)
{
	ACPI_OWNER_ID           owner_id = 0xFFFF;


	acpi_cm_acquire_mutex (ACPI_MTX_CACHES);

	switch (id_type)
	{
	case OWNER_TYPE_TABLE:

		owner_id = acpi_gbl_next_table_owner_id;
		acpi_gbl_next_table_owner_id++;

		if (acpi_gbl_next_table_owner_id == FIRST_METHOD_ID)
		{
			acpi_gbl_next_table_owner_id = FIRST_TABLE_ID;
		}
		break;


	case OWNER_TYPE_METHOD:

		owner_id = acpi_gbl_next_method_owner_id;
		acpi_gbl_next_method_owner_id++;

		if (acpi_gbl_next_method_owner_id == FIRST_TABLE_ID)
		{
			acpi_gbl_next_method_owner_id = FIRST_METHOD_ID;
		}
		break;
	}


	acpi_cm_release_mutex (ACPI_MTX_CACHES);

	return (owner_id);
}


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

void
acpi_cm_init_globals (
	void)
{
	u32                     i;


	/* 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;
	}


	/* Address Space handler array */

	for (i = 0; i < ACPI_NUM_ADDRESS_SPACES; i++)
	{
		acpi_gbl_address_spaces[i].handler  = NULL;
		acpi_gbl_address_spaces[i].context  = NULL;
	}

	/* Mutex locked flags */

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

	/* Miscellaneous variables */

	acpi_gbl_system_flags               = 0;
	acpi_gbl_startup_flags              = 0;
	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        = FIRST_TABLE_ID;
	acpi_gbl_next_method_owner_id       = FIRST_METHOD_ID;
	acpi_gbl_debugger_configuration     = DEBUGGER_THREADING;

	/* Cache of small "state" objects */

	acpi_gbl_generic_state_cache        = NULL;
	acpi_gbl_generic_state_cache_depth  = 0;
	acpi_gbl_state_cache_requests       = 0;
	acpi_gbl_state_cache_hits           = 0;

	acpi_gbl_parse_cache                = NULL;
	acpi_gbl_parse_cache_depth          = 0;
	acpi_gbl_parse_cache_requests       = 0;
	acpi_gbl_parse_cache_hits           = 0;

	acpi_gbl_ext_parse_cache            = NULL;
	acpi_gbl_ext_parse_cache_depth      = 0;
	acpi_gbl_ext_parse_cache_requests   = 0;
	acpi_gbl_ext_parse_cache_hits       = 0;

	acpi_gbl_object_cache               = NULL;
	acpi_gbl_object_cache_depth         = 0;
	acpi_gbl_object_cache_requests      = 0;
	acpi_gbl_object_cache_hits          = 0;

	acpi_gbl_walk_state_cache           = NULL;
	acpi_gbl_walk_state_cache_depth     = 0;
	acpi_gbl_walk_state_cache_requests  = 0;
	acpi_gbl_walk_state_cache_hits      = 0;

	/* Hardware oriented */

	acpi_gbl_gpe0enable_register_save   = NULL;
	acpi_gbl_gpe1_enable_register_save  = NULL;
	acpi_gbl_original_mode              = SYS_MODE_UNKNOWN;   /*  original ACPI/legacy mode   */
	acpi_gbl_gpe_registers              = NULL;
	acpi_gbl_gpe_info                   = NULL;

	/* Namespace */

	acpi_gbl_root_node                  = NULL;

	acpi_gbl_root_node_struct.name      = ACPI_ROOT_NAME;
	acpi_gbl_root_node_struct.data_type = 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;

	/* Memory allocation metrics - compiled out in non-debug mode. */

	INITIALIZE_ALLOCATION_METRICS();

	return;
}