patch-2.4.22 linux-2.4.22/drivers/acpi/namespace/nsparse.c
Next file: linux-2.4.22/drivers/acpi/namespace/nssearch.c
Previous file: linux-2.4.22/drivers/acpi/namespace/nsobject.c
Back to the patch index
Back to the overall index
- Lines: 171
- Date:
2003-08-25 04:44:41.000000000 -0700
- Orig file:
linux-2.4.21/drivers/acpi/namespace/nsparse.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/drivers/acpi/namespace/nsparse.c linux-2.4.22/drivers/acpi/namespace/nsparse.c
@@ -0,0 +1,170 @@
+/******************************************************************************
+ *
+ * Module Name: nsparse - namespace interface to AML parser
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acnamesp.h>
+#include <acpi/acparser.h>
+#include <acpi/acdispat.h>
+
+
+#define _COMPONENT ACPI_NAMESPACE
+ ACPI_MODULE_NAME ("nsparse")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: ns_one_complete_parse
+ *
+ * PARAMETERS: pass_number - 1 or 2
+ * table_desc - The table to be parsed.
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Perform one complete parse of an ACPI/AML table.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_one_complete_parse (
+ u32 pass_number,
+ struct acpi_table_desc *table_desc)
+{
+ union acpi_parse_object *parse_root;
+ acpi_status status;
+ struct acpi_walk_state *walk_state;
+
+
+ ACPI_FUNCTION_TRACE ("ns_one_complete_parse");
+
+
+ /* Create and init a Root Node */
+
+ parse_root = acpi_ps_create_scope_op ();
+ if (!parse_root) {
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ /* Create and initialize a new walk state */
+
+ walk_state = acpi_ds_create_walk_state (table_desc->table_id,
+ NULL, NULL, NULL);
+ if (!walk_state) {
+ acpi_ps_free_op (parse_root);
+ return_ACPI_STATUS (AE_NO_MEMORY);
+ }
+
+ status = acpi_ds_init_aml_walk (walk_state, parse_root, NULL, table_desc->aml_start,
+ table_desc->aml_length, NULL, NULL, pass_number);
+ if (ACPI_FAILURE (status)) {
+ acpi_ds_delete_walk_state (walk_state);
+ return_ACPI_STATUS (status);
+ }
+
+ /* Parse the AML */
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "*PARSE* pass %d parse\n", pass_number));
+ status = acpi_ps_parse_aml (walk_state);
+
+ acpi_ps_delete_parse_tree (parse_root);
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_parse_table
+ *
+ * PARAMETERS: table_desc - An ACPI table descriptor for table to parse
+ * start_node - Where to enter the table into the namespace
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Parse AML within an ACPI table and return a tree of ops
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_parse_table (
+ struct acpi_table_desc *table_desc,
+ struct acpi_namespace_node *start_node)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("ns_parse_table");
+
+
+ /*
+ * AML Parse, pass 1
+ *
+ * In this pass, we load most of the namespace. Control methods
+ * are not parsed until later. A parse tree is not created. Instead,
+ * each Parser Op subtree is deleted when it is finished. This saves
+ * a great deal of memory, and allows a small cache of parse objects
+ * to service the entire parse. The second pass of the parse then
+ * performs another complete parse of the AML..
+ */
+ status = acpi_ns_one_complete_parse (1, table_desc);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * AML Parse, pass 2
+ *
+ * In this pass, we resolve forward references and other things
+ * that could not be completed during the first pass.
+ * Another complete parse of the AML is performed, but the
+ * overhead of this is compensated for by the fact that the
+ * parse objects are all cached.
+ */
+ status = acpi_ns_one_complete_parse (2, table_desc);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)