1 files changed, 205 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c
new file mode 100644
index 000000000000..4f1cdd823fcc
--- /dev/null
+++ b/drivers/acpi/acpica/dsinit.c
@@ -0,0 +1,205 @@
+/******************************************************************************
+ *
+ * Module Name: dsinit - Object initialization namespace walk
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, Intel Corp.
+ * 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/accommon.h>
+#include <acpi/acdispat.h>
+#include <acpi/acnamesp.h>
+#include <acpi/actables.h>
+
+#define _COMPONENT          ACPI_DISPATCHER
+ACPI_MODULE_NAME("dsinit")
+
+/* Local prototypes */
+static acpi_status
+acpi_ds_init_one_object(acpi_handle obj_handle,
+                        u32 level, void *context, void **return_value);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ds_init_one_object
+ *
+ * PARAMETERS:  obj_handle      - Node for the object
+ *              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
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ds_init_one_object(acpi_handle obj_handle,
+                        u32 level, void *context, void **return_value)
+{
+        struct acpi_init_walk_info *info =
+            (struct acpi_init_walk_info *)context;
+        struct acpi_namespace_node *node =
+            (struct acpi_namespace_node *)obj_handle;
+        acpi_object_type type;
+        acpi_status status;
+
+        ACPI_FUNCTION_ENTRY();
+
+        /*
+         * We are only interested in NS nodes owned by the table that
+         * was just loaded
+         */
+        if (node->owner_id != info->owner_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_EXCEPTION((AE_INFO, status,
+                                        "During Region initialization %p [%4.4s]",
+                                        obj_handle,
+                                        acpi_ut_get_node_name(obj_handle)));
+                }
+
+                info->op_region_count++;
+                break;
+
+        case ACPI_TYPE_METHOD:
+
+                info->method_count++;
+                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 "StartNode" and perform any
+ *              necessary initialization on the objects found therein
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_initialize_objects(u32 table_index,
+                           struct acpi_namespace_node * start_node)
+{
+        acpi_status status;
+        struct acpi_init_walk_info info;
+        struct acpi_table_header *table;
+        acpi_owner_id owner_id;
+
+        ACPI_FUNCTION_TRACE(ds_initialize_objects);
+
+        status = acpi_tb_get_owner_id(table_index, &owner_id);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
+        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_index = table_index;
+        info.owner_id = owner_id;
+
+        /* 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_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
+        }
+
+        status = acpi_get_table_by_index(table_index, &table);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(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->signature, owner_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);
+}