summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/dispatcher/dsinit.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/dispatcher/dsinit.c')
-rw-r--r--drivers/acpi/dispatcher/dsinit.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/drivers/acpi/dispatcher/dsinit.c b/drivers/acpi/dispatcher/dsinit.c
new file mode 100644
index 00000000000..b4d264dbbf6
--- /dev/null
+++ b/drivers/acpi/dispatcher/dsinit.c
@@ -0,0 +1,235 @@
+/******************************************************************************
+ *
+ * Module Name: dsinit - Object initialization namespace walk
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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/acpi.h>
+#include <acpi/acdispat.h>
+#include <acpi/acnamesp.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;
+ struct acpi_init_walk_info *info = (struct 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 (((struct 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_ut_get_node_name (obj_handle),
+ 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) {
+ ((struct acpi_namespace_node *) obj_handle)->flags |= ANOBJ_DATA_WIDTH_32;
+ }
+
+ /*
+ * Always parse methods to detect errors, we will 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_ut_get_node_name (obj_handle),
+ acpi_format_exception (status)));
+
+ /* This parse failed, but we will continue parsing more methods */
+
+ break;
+ }
+
+ /*
+ * Delete the parse tree. We simply 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 (((struct 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 (
+ struct acpi_table_desc *table_desc,
+ struct acpi_namespace_node *start_node)
+{
+ acpi_status status;
+ struct 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](id %4.4X) - %hd Objects with %hd Devices %hd Methods %hd Regions\n",
+ table_desc->pointer->signature, table_desc->table_id, 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);
+}
+
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 12:10:30 +0000