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/******************************************************************************
*
* Module Name: dsinit - Object initialization namespace walk
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2002, R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acparser.h"
#include "amlcode.h"
#include "acdispat.h"
#include "acnamesp.h"
#include "acinterp.h"
#define _COMPONENT ACPI_DISPATCHER
ACPI_MODULE_NAME ("dsinit")
/*******************************************************************************
*
* FUNCTION: acpi_ds_init_one_object
*
* PARAMETERS: obj_handle - Node
* Level - Current nesting level
* Context - Points to a init info struct
* return_value - Not used
*
* RETURN: Status
*
* DESCRIPTION: Callback from acpi_walk_namespace. Invoked for every object
* within the namespace.
*
* Currently, the only objects that require initialization are:
* 1) Methods
* 2) Operation Regions
*
******************************************************************************/
acpi_status
acpi_ds_init_one_object (
acpi_handle obj_handle,
u32 level,
void *context,
void **return_value)
{
acpi_object_type type;
acpi_status status;
acpi_init_walk_info *info = (acpi_init_walk_info *) context;
ACPI_FUNCTION_NAME ("ds_init_one_object");
/*
* We are only interested in objects owned by the table that
* was just loaded
*/
if (((acpi_namespace_node *) obj_handle)->owner_id !=
info->table_desc->table_id) {
return (AE_OK);
}
info->object_count++;
/* And even then, we are only interested in a few object types */
type = acpi_ns_get_type (obj_handle);
switch (type) {
case ACPI_TYPE_REGION:
status = acpi_ds_initialize_region (obj_handle);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Region %p [%4.4s] - Init failure, %s\n",
obj_handle, ((acpi_namespace_node *) obj_handle)->name.ascii,
acpi_format_exception (status)));
}
info->op_region_count++;
break;
case ACPI_TYPE_METHOD:
info->method_count++;
/* Print a dot for each method unless we are going to print the entire pathname */
if (!(acpi_dbg_level & ACPI_LV_INIT_NAMES)) {
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "."));
}
/*
* Set the execution data width (32 or 64) based upon the
* revision number of the parent ACPI table.
* TBD: This is really for possible future support of integer width
* on a per-table basis. Currently, we just use a global for the width.
*/
if (info->table_desc->pointer->revision == 1) {
((acpi_namespace_node *) obj_handle)->flags |= ANOBJ_DATA_WIDTH_32;
}
/*
* Always parse methods to detect errors, we may delete
* the parse tree below
*/
status = acpi_ds_parse_method (obj_handle);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Method %p [%4.4s] - parse failure, %s\n",
obj_handle, ((acpi_namespace_node *) obj_handle)->name.ascii,
acpi_format_exception (status)));
/* This parse failed, but we will continue parsing more methods */
break;
}
/*
* Delete the parse tree. We simple re-parse the method
* for every execution since there isn't much overhead
*/
acpi_ns_delete_namespace_subtree (obj_handle);
acpi_ns_delete_namespace_by_owner (((acpi_namespace_node *) obj_handle)->object->method.owning_id);
break;
case ACPI_TYPE_DEVICE:
info->device_count++;
break;
default:
break;
}
/*
* We ignore errors from above, and always return OK, since
* we don't want to abort the walk on a single error.
*/
return (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_ds_initialize_objects
*
* PARAMETERS: table_desc - Descriptor for parent ACPI table
* start_node - Root of subtree to be initialized.
*
* RETURN: Status
*
* DESCRIPTION: Walk the namespace starting at "start_node" and perform any
* necessary initialization on the objects found therein
*
******************************************************************************/
acpi_status
acpi_ds_initialize_objects (
acpi_table_desc *table_desc,
acpi_namespace_node *start_node)
{
acpi_status status;
acpi_init_walk_info info;
ACPI_FUNCTION_TRACE ("ds_initialize_objects");
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"**** Starting initialization of namespace objects ****\n"));
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT, "Parsing all Control Methods:"));
info.method_count = 0;
info.op_region_count = 0;
info.object_count = 0;
info.device_count = 0;
info.table_desc = table_desc;
/* Walk entire namespace from the supplied root */
status = acpi_walk_namespace (ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
acpi_ds_init_one_object, &info, NULL);
if (ACPI_FAILURE (status)) {
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "walk_namespace failed, %s\n",
acpi_format_exception (status)));
}
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
"\nTable [%4.4s] - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
table_desc->pointer->signature, info.object_count,
info.device_count, info.method_count, info.op_region_count));
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
"%hd Methods, %hd Regions\n", info.method_count, info.op_region_count));
return_ACPI_STATUS (AE_OK);
}