diff options
Diffstat (limited to 'drivers/acpi/namespace/nsload.c')
| -rw-r--r-- | drivers/acpi/namespace/nsload.c | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/drivers/acpi/namespace/nsload.c b/drivers/acpi/namespace/nsload.c deleted file mode 100644 index c28849de465..00000000000 --- a/drivers/acpi/namespace/nsload.c +++ /dev/null @@ -1,414 +0,0 @@ -/****************************************************************************** - * - * Module Name: nsload - namespace loading/expanding/contracting procedures - * - *****************************************************************************/ - -/* - * 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/acnamesp.h> -#include <acpi/acdispat.h> - -#define _COMPONENT ACPI_NAMESPACE -ACPI_MODULE_NAME("nsload") - -/* Local prototypes */ -static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type); - -#ifdef ACPI_FUTURE_IMPLEMENTATION -acpi_status acpi_ns_unload_namespace(acpi_handle handle); - -static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle); -#endif - -#ifndef ACPI_NO_METHOD_EXECUTION -/******************************************************************************* - * - * FUNCTION: acpi_ns_load_table - * - * PARAMETERS: table_desc - Descriptor for table to be loaded - * Node - Owning NS node - * - * RETURN: Status - * - * DESCRIPTION: Load one ACPI table into the namespace - * - ******************************************************************************/ - -acpi_status -acpi_ns_load_table(struct acpi_table_desc *table_desc, - struct acpi_namespace_node *node) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE("ns_load_table"); - - /* Check if table contains valid AML (must be DSDT, PSDT, SSDT, etc.) */ - - if (! - (acpi_gbl_table_data[table_desc->type]. - flags & ACPI_TABLE_EXECUTABLE)) { - /* Just ignore this table */ - - return_ACPI_STATUS(AE_OK); - } - - /* Check validity of the AML start and length */ - - if (!table_desc->aml_start) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Null AML pointer\n")); - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AML block at %p\n", - table_desc->aml_start)); - - /* Ignore table if there is no AML contained within */ - - if (!table_desc->aml_length) { - ACPI_REPORT_WARNING(("Zero-length AML block in table [%4.4s]\n", - table_desc->pointer->signature)); - return_ACPI_STATUS(AE_OK); - } - - /* - * Parse the table and load the namespace with all named - * objects found within. Control methods are NOT parsed - * at this time. In fact, the control methods cannot be - * parsed until the entire namespace is loaded, because - * if a control method makes a forward reference (call) - * to another control method, we can't continue parsing - * because we don't know how many arguments to parse next! - */ - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "**** Loading table into namespace ****\n")); - - status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - status = acpi_ns_parse_table(table_desc, node->child); - (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* - * Now we can parse the control methods. We always parse - * them here for a sanity check, and if configured for - * just-in-time parsing, we delete the control method - * parse trees. - */ - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "**** Begin Table Method Parsing and Object Initialization ****\n")); - - status = acpi_ds_initialize_objects(table_desc, node); - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "**** Completed Table Method Parsing and Object Initialization ****\n")); - - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ns_load_table_by_type - * - * PARAMETERS: table_type - Id of the table type to load - * - * RETURN: Status - * - * DESCRIPTION: Load an ACPI table or tables into the namespace. All tables - * of the given type are loaded. The mechanism allows this - * routine to be called repeatedly. - * - ******************************************************************************/ - -static acpi_status acpi_ns_load_table_by_type(acpi_table_type table_type) -{ - u32 i; - acpi_status status; - struct acpi_table_desc *table_desc; - - ACPI_FUNCTION_TRACE("ns_load_table_by_type"); - - status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* - * Table types supported are: - * DSDT (one), SSDT/PSDT (multiple) - */ - switch (table_type) { - case ACPI_TABLE_DSDT: - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace load: DSDT\n")); - - table_desc = acpi_gbl_table_lists[ACPI_TABLE_DSDT].next; - - /* If table already loaded into namespace, just return */ - - if (table_desc->loaded_into_namespace) { - goto unlock_and_exit; - } - - /* Now load the single DSDT */ - - status = acpi_ns_load_table(table_desc, acpi_gbl_root_node); - if (ACPI_SUCCESS(status)) { - table_desc->loaded_into_namespace = TRUE; - } - break; - - case ACPI_TABLE_SSDT: - case ACPI_TABLE_PSDT: - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Namespace load: %d SSDT or PSDTs\n", - acpi_gbl_table_lists[table_type].count)); - - /* - * Traverse list of SSDT or PSDT tables - */ - table_desc = acpi_gbl_table_lists[table_type].next; - for (i = 0; i < acpi_gbl_table_lists[table_type].count; i++) { - /* - * Only attempt to load table into namespace if it is not - * already loaded! - */ - if (!table_desc->loaded_into_namespace) { - status = - acpi_ns_load_table(table_desc, - acpi_gbl_root_node); - if (ACPI_FAILURE(status)) { - break; - } - - table_desc->loaded_into_namespace = TRUE; - } - - table_desc = table_desc->next; - } - break; - - default: - status = AE_SUPPORT; - break; - } - - unlock_and_exit: - (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_load_namespace - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Load the name space from what ever is pointed to by DSDT. - * (DSDT points to either the BIOS or a buffer.) - * - ******************************************************************************/ - -acpi_status acpi_ns_load_namespace(void) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE("acpi_load_name_space"); - - /* There must be at least a DSDT installed */ - - if (acpi_gbl_DSDT == NULL) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "DSDT is not in memory\n")); - return_ACPI_STATUS(AE_NO_ACPI_TABLES); - } - - /* - * Load the namespace. The DSDT is required, - * but the SSDT and PSDT tables are optional. - */ - status = acpi_ns_load_table_by_type(ACPI_TABLE_DSDT); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Ignore exceptions from these */ - - (void)acpi_ns_load_table_by_type(ACPI_TABLE_SSDT); - (void)acpi_ns_load_table_by_type(ACPI_TABLE_PSDT); - - ACPI_DEBUG_PRINT_RAW((ACPI_DB_INIT, - "ACPI Namespace successfully loaded at root %p\n", - acpi_gbl_root_node)); - - return_ACPI_STATUS(status); -} - -#ifdef ACPI_FUTURE_IMPLEMENTATION -/******************************************************************************* - * - * FUNCTION: acpi_ns_delete_subtree - * - * PARAMETERS: start_handle - Handle in namespace where search begins - * - * RETURNS Status - * - * DESCRIPTION: Walks the namespace starting at the given handle and deletes - * all objects, entries, and scopes in the entire subtree. - * - * Namespace/Interpreter should be locked or the subsystem should - * be in shutdown before this routine is called. - * - ******************************************************************************/ - -static acpi_status acpi_ns_delete_subtree(acpi_handle start_handle) -{ - acpi_status status; - acpi_handle child_handle; - acpi_handle parent_handle; - acpi_handle next_child_handle; - acpi_handle dummy; - u32 level; - - ACPI_FUNCTION_TRACE("ns_delete_subtree"); - - parent_handle = start_handle; - child_handle = NULL; - level = 1; - - /* - * Traverse the tree of objects until we bubble back up - * to where we started. - */ - while (level > 0) { - /* Attempt to get the next object in this scope */ - - status = acpi_get_next_object(ACPI_TYPE_ANY, parent_handle, - child_handle, &next_child_handle); - - child_handle = next_child_handle; - - /* Did we get a new object? */ - - if (ACPI_SUCCESS(status)) { - /* Check if this object has any children */ - - if (ACPI_SUCCESS - (acpi_get_next_object - (ACPI_TYPE_ANY, child_handle, NULL, &dummy))) { - /* - * There is at least one child of this object, - * visit the object - */ - level++; - parent_handle = child_handle; - child_handle = NULL; - } - } else { - /* - * No more children in this object, go back up to - * the object's parent - */ - level--; - - /* Delete all children now */ - - acpi_ns_delete_children(child_handle); - - child_handle = parent_handle; - status = acpi_get_parent(parent_handle, &parent_handle); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - } - - /* Now delete the starting object, and we are done */ - - acpi_ns_delete_node(child_handle); - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ns_unload_name_space - * - * PARAMETERS: Handle - Root of namespace subtree to be deleted - * - * RETURN: Status - * - * DESCRIPTION: Shrinks the namespace, typically in response to an undocking - * event. Deletes an entire subtree starting from (and - * including) the given handle. - * - ******************************************************************************/ - -acpi_status acpi_ns_unload_namespace(acpi_handle handle) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE("ns_unload_name_space"); - - /* Parameter validation */ - - if (!acpi_gbl_root_node) { - return_ACPI_STATUS(AE_NO_NAMESPACE); - } - - if (!handle) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* This function does the real work */ - - status = acpi_ns_delete_subtree(handle); - - return_ACPI_STATUS(status); -} -#endif -#endif |