diff options
Diffstat (limited to 'drivers/acpi/namespace/nsnames.c')
| -rw-r--r-- | drivers/acpi/namespace/nsnames.c | 264 |
1 files changed, 0 insertions, 264 deletions
diff --git a/drivers/acpi/namespace/nsnames.c b/drivers/acpi/namespace/nsnames.c deleted file mode 100644 index 42a39a7c96e9..000000000000 --- a/drivers/acpi/namespace/nsnames.c +++ /dev/null @@ -1,264 +0,0 @@ -/******************************************************************************* - * - * Module Name: nsnames - Name manipulation and search - * - ******************************************************************************/ - -/* - * 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/amlcode.h> -#include <acpi/acnamesp.h> - -#define _COMPONENT ACPI_NAMESPACE -ACPI_MODULE_NAME("nsnames") - -/******************************************************************************* - * - * FUNCTION: acpi_ns_build_external_path - * - * PARAMETERS: Node - NS node whose pathname is needed - * Size - Size of the pathname - * *name_buffer - Where to return the pathname - * - * RETURN: Status - * Places the pathname into the name_buffer, in external format - * (name segments separated by path separators) - * - * DESCRIPTION: Generate a full pathaname - * - ******************************************************************************/ -acpi_status -acpi_ns_build_external_path(struct acpi_namespace_node *node, - acpi_size size, char *name_buffer) -{ - acpi_size index; - struct acpi_namespace_node *parent_node; - - ACPI_FUNCTION_ENTRY(); - - /* Special case for root */ - - index = size - 1; - if (index < ACPI_NAME_SIZE) { - name_buffer[0] = AML_ROOT_PREFIX; - name_buffer[1] = 0; - return (AE_OK); - } - - /* Store terminator byte, then build name backwards */ - - parent_node = node; - name_buffer[index] = 0; - - while ((index > ACPI_NAME_SIZE) && (parent_node != acpi_gbl_root_node)) { - index -= ACPI_NAME_SIZE; - - /* Put the name into the buffer */ - - ACPI_MOVE_32_TO_32((name_buffer + index), &parent_node->name); - parent_node = acpi_ns_get_parent_node(parent_node); - - /* Prefix name with the path separator */ - - index--; - name_buffer[index] = ACPI_PATH_SEPARATOR; - } - - /* Overwrite final separator with the root prefix character */ - - name_buffer[index] = AML_ROOT_PREFIX; - - if (index != 0) { - ACPI_ERROR((AE_INFO, - "Could not construct external pathname; index=%X, size=%X, Path=%s", - (u32) index, (u32) size, &name_buffer[size])); - - return (AE_BAD_PARAMETER); - } - - return (AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ns_get_external_pathname - * - * PARAMETERS: Node - Namespace node whose pathname is needed - * - * RETURN: Pointer to storage containing the fully qualified name of - * the node, In external format (name segments separated by path - * separators.) - * - * DESCRIPTION: Used for debug printing in acpi_ns_search_table(). - * - ******************************************************************************/ - -char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node) -{ - acpi_status status; - char *name_buffer; - acpi_size size; - - ACPI_FUNCTION_TRACE_PTR(ns_get_external_pathname, node); - - /* Calculate required buffer size based on depth below root */ - - size = acpi_ns_get_pathname_length(node); - if (!size) { - return_PTR(NULL); - } - - /* Allocate a buffer to be returned to caller */ - - name_buffer = ACPI_ALLOCATE_ZEROED(size); - if (!name_buffer) { - ACPI_ERROR((AE_INFO, "Allocation failure")); - return_PTR(NULL); - } - - /* Build the path in the allocated buffer */ - - status = acpi_ns_build_external_path(node, size, name_buffer); - if (ACPI_FAILURE(status)) { - ACPI_FREE(name_buffer); - return_PTR(NULL); - } - - return_PTR(name_buffer); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ns_get_pathname_length - * - * PARAMETERS: Node - Namespace node - * - * RETURN: Length of path, including prefix - * - * DESCRIPTION: Get the length of the pathname string for this node - * - ******************************************************************************/ - -acpi_size acpi_ns_get_pathname_length(struct acpi_namespace_node *node) -{ - acpi_size size; - struct acpi_namespace_node *next_node; - - ACPI_FUNCTION_ENTRY(); - - /* - * Compute length of pathname as 5 * number of name segments. - * Go back up the parent tree to the root - */ - size = 0; - next_node = node; - - while (next_node && (next_node != acpi_gbl_root_node)) { - if (ACPI_GET_DESCRIPTOR_TYPE(next_node) != ACPI_DESC_TYPE_NAMED) { - ACPI_ERROR((AE_INFO, - "Invalid Namespace Node (%p) while traversing namespace", - next_node)); - return 0; - } - size += ACPI_PATH_SEGMENT_LENGTH; - next_node = acpi_ns_get_parent_node(next_node); - } - - if (!size) { - size = 1; /* Root node case */ - } - - return (size + 1); /* +1 for null string terminator */ -} - -/******************************************************************************* - * - * FUNCTION: acpi_ns_handle_to_pathname - * - * PARAMETERS: target_handle - Handle of named object whose name is - * to be found - * Buffer - Where the pathname is returned - * - * RETURN: Status, Buffer is filled with pathname if status is AE_OK - * - * DESCRIPTION: Build and return a full namespace pathname - * - ******************************************************************************/ - -acpi_status -acpi_ns_handle_to_pathname(acpi_handle target_handle, - struct acpi_buffer * buffer) -{ - acpi_status status; - struct acpi_namespace_node *node; - acpi_size required_size; - - ACPI_FUNCTION_TRACE_PTR(ns_handle_to_pathname, target_handle); - - node = acpi_ns_map_handle_to_node(target_handle); - if (!node) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Determine size required for the caller buffer */ - - required_size = acpi_ns_get_pathname_length(node); - if (!required_size) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Validate/Allocate/Clear caller buffer */ - - status = acpi_ut_initialize_buffer(buffer, required_size); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Build the path in the caller buffer */ - - status = - acpi_ns_build_external_path(node, required_size, buffer->pointer); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%X]\n", - (char *)buffer->pointer, (u32) required_size)); - return_ACPI_STATUS(AE_OK); -} |