patch-2.4.22 linux-2.4.22/drivers/acpi/dispatcher/dsinit.c

• Lines: 236
• Date: 2003-08-25 04:44:41.000000000 -0700
• Orig file: linux-2.4.21/drivers/acpi/dispatcher/dsinit.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/drivers/acpi/dispatcher/dsinit.c linux-2.4.22/drivers/acpi/dispatcher/dsinit.c
@@ -0,0 +1,235 @@
+/******************************************************************************
+ *
+ * Module Name: dsinit - Object initialization namespace walk
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2003, 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, ((struct 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) {
+			((struct 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, ((struct 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 (((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);
+}
+
+