Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/acpi/utilities/utobject.c b/drivers/acpi/utilities/utobject.c
new file mode 100644
index 0000000..9ee40a4
--- /dev/null
+++ b/drivers/acpi/utilities/utobject.c
@@ -0,0 +1,671 @@
+/******************************************************************************
+ *
+ * Module Name: utobject - ACPI object create/delete/size/cache routines
+ *
+ *****************************************************************************/
+
+/*
+ * 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/amlcode.h>
+
+
+#define _COMPONENT ACPI_UTILITIES
+ ACPI_MODULE_NAME ("utobject")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_create_internal_object_dbg
+ *
+ * PARAMETERS: module_name - Source file name of caller
+ * line_number - Line number of caller
+ * component_id - Component type of caller
+ * Type - ACPI Type of the new object
+ *
+ * RETURN: Object - The new object. Null on failure
+ *
+ * DESCRIPTION: Create and initialize a new internal object.
+ *
+ * NOTE: We always allocate the worst-case object descriptor because
+ * these objects are cached, and we want them to be
+ * one-size-satisifies-any-request. This in itself may not be
+ * the most memory efficient, but the efficiency of the object
+ * cache should more than make up for this!
+ *
+ ******************************************************************************/
+
+union acpi_operand_object *
+acpi_ut_create_internal_object_dbg (
+ char *module_name,
+ u32 line_number,
+ u32 component_id,
+ acpi_object_type type)
+{
+ union acpi_operand_object *object;
+ union acpi_operand_object *second_object;
+
+
+ ACPI_FUNCTION_TRACE_STR ("ut_create_internal_object_dbg", acpi_ut_get_type_name (type));
+
+
+ /* Allocate the raw object descriptor */
+
+ object = acpi_ut_allocate_object_desc_dbg (module_name, line_number, component_id);
+ if (!object) {
+ return_PTR (NULL);
+ }
+
+ switch (type) {
+ case ACPI_TYPE_REGION:
+ case ACPI_TYPE_BUFFER_FIELD:
+
+ /* These types require a secondary object */
+
+ second_object = acpi_ut_allocate_object_desc_dbg (module_name, line_number, component_id);
+ if (!second_object) {
+ acpi_ut_delete_object_desc (object);
+ return_PTR (NULL);
+ }
+
+ second_object->common.type = ACPI_TYPE_LOCAL_EXTRA;
+ second_object->common.reference_count = 1;
+
+ /* Link the second object to the first */
+
+ object->common.next_object = second_object;
+ break;
+
+ default:
+ /* All others have no secondary object */
+ break;
+ }
+
+ /* Save the object type in the object descriptor */
+
+ object->common.type = (u8) type;
+
+ /* Init the reference count */
+
+ object->common.reference_count = 1;
+
+ /* Any per-type initialization should go here */
+
+ return_PTR (object);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_create_buffer_object
+ *
+ * PARAMETERS: buffer_size - Size of buffer to be created
+ *
+ * RETURN: Pointer to a new Buffer object
+ *
+ * DESCRIPTION: Create a fully initialized buffer object
+ *
+ ******************************************************************************/
+
+union acpi_operand_object *
+acpi_ut_create_buffer_object (
+ acpi_size buffer_size)
+{
+ union acpi_operand_object *buffer_desc;
+ u8 *buffer = NULL;
+
+
+ ACPI_FUNCTION_TRACE_U32 ("ut_create_buffer_object", buffer_size);
+
+
+ /* Create a new Buffer object */
+
+ buffer_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+ if (!buffer_desc) {
+ return_PTR (NULL);
+ }
+
+ /* Create an actual buffer only if size > 0 */
+
+ if (buffer_size > 0) {
+ /* Allocate the actual buffer */
+
+ buffer = ACPI_MEM_CALLOCATE (buffer_size);
+ if (!buffer) {
+ ACPI_REPORT_ERROR (("create_buffer: could not allocate size %X\n",
+ (u32) buffer_size));
+ acpi_ut_remove_reference (buffer_desc);
+ return_PTR (NULL);
+ }
+ }
+
+ /* Complete buffer object initialization */
+
+ buffer_desc->buffer.flags |= AOPOBJ_DATA_VALID;
+ buffer_desc->buffer.pointer = buffer;
+ buffer_desc->buffer.length = (u32) buffer_size;
+
+ /* Return the new buffer descriptor */
+
+ return_PTR (buffer_desc);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_create_string_object
+ *
+ * PARAMETERS: string_size - Size of string to be created. Does not
+ * include NULL terminator, this is added
+ * automatically.
+ *
+ * RETURN: Pointer to a new String object
+ *
+ * DESCRIPTION: Create a fully initialized string object
+ *
+ ******************************************************************************/
+
+union acpi_operand_object *
+acpi_ut_create_string_object (
+ acpi_size string_size)
+{
+ union acpi_operand_object *string_desc;
+ char *string;
+
+
+ ACPI_FUNCTION_TRACE_U32 ("ut_create_string_object", string_size);
+
+
+ /* Create a new String object */
+
+ string_desc = acpi_ut_create_internal_object (ACPI_TYPE_STRING);
+ if (!string_desc) {
+ return_PTR (NULL);
+ }
+
+ /*
+ * Allocate the actual string buffer -- (Size + 1) for NULL terminator.
+ * NOTE: Zero-length strings are NULL terminated
+ */
+ string = ACPI_MEM_CALLOCATE (string_size + 1);
+ if (!string) {
+ ACPI_REPORT_ERROR (("create_string: could not allocate size %X\n",
+ (u32) string_size));
+ acpi_ut_remove_reference (string_desc);
+ return_PTR (NULL);
+ }
+
+ /* Complete string object initialization */
+
+ string_desc->string.pointer = string;
+ string_desc->string.length = (u32) string_size;
+
+ /* Return the new string descriptor */
+
+ return_PTR (string_desc);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_valid_internal_object
+ *
+ * PARAMETERS: Object - Object to be validated
+ *
+ * RETURN: Validate a pointer to be an union acpi_operand_object
+ *
+ ******************************************************************************/
+
+u8
+acpi_ut_valid_internal_object (
+ void *object)
+{
+
+ ACPI_FUNCTION_NAME ("ut_valid_internal_object");
+
+
+ /* Check for a null pointer */
+
+ if (!object) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "**** Null Object Ptr\n"));
+ return (FALSE);
+ }
+
+ /* Check the descriptor type field */
+
+ switch (ACPI_GET_DESCRIPTOR_TYPE (object)) {
+ case ACPI_DESC_TYPE_OPERAND:
+
+ /* The object appears to be a valid union acpi_operand_object */
+
+ return (TRUE);
+
+ default:
+ ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
+ "%p is not not an ACPI operand obj [%s]\n",
+ object, acpi_ut_get_descriptor_name (object)));
+ break;
+ }
+
+ return (FALSE);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_allocate_object_desc_dbg
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * component_id - Caller's component ID (for error output)
+ *
+ * RETURN: Pointer to newly allocated object descriptor. Null on error
+ *
+ * DESCRIPTION: Allocate a new object descriptor. Gracefully handle
+ * error conditions.
+ *
+ ******************************************************************************/
+
+void *
+acpi_ut_allocate_object_desc_dbg (
+ char *module_name,
+ u32 line_number,
+ u32 component_id)
+{
+ union acpi_operand_object *object;
+
+
+ ACPI_FUNCTION_TRACE ("ut_allocate_object_desc_dbg");
+
+
+ object = acpi_ut_acquire_from_cache (ACPI_MEM_LIST_OPERAND);
+ if (!object) {
+ _ACPI_REPORT_ERROR (module_name, line_number, component_id,
+ ("Could not allocate an object descriptor\n"));
+
+ return_PTR (NULL);
+ }
+
+ /* Mark the descriptor type */
+
+ ACPI_SET_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_OPERAND);
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p Size %X\n",
+ object, (u32) sizeof (union acpi_operand_object)));
+
+ return_PTR (object);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_delete_object_desc
+ *
+ * PARAMETERS: Object - An Acpi internal object to be deleted
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Free an ACPI object descriptor or add it to the object cache
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_object_desc (
+ union acpi_operand_object *object)
+{
+ ACPI_FUNCTION_TRACE_PTR ("ut_delete_object_desc", object);
+
+
+ /* Object must be an union acpi_operand_object */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE (object) != ACPI_DESC_TYPE_OPERAND) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "%p is not an ACPI Operand object [%s]\n", object,
+ acpi_ut_get_descriptor_name (object)));
+ return_VOID;
+ }
+
+ acpi_ut_release_to_cache (ACPI_MEM_LIST_OPERAND, object);
+
+ return_VOID;
+}
+
+
+#ifdef ACPI_ENABLE_OBJECT_CACHE
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_delete_object_cache
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Purge the global state object cache. Used during subsystem
+ * termination.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_delete_object_cache (
+ void)
+{
+ ACPI_FUNCTION_TRACE ("ut_delete_object_cache");
+
+
+ acpi_ut_delete_generic_cache (ACPI_MEM_LIST_OPERAND);
+ return_VOID;
+}
+#endif
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_get_simple_object_size
+ *
+ * PARAMETERS: *internal_object - Pointer to the object we are examining
+ * *obj_length - Where the length is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to determine the space required to
+ * contain a simple object for return to an external user.
+ *
+ * The length includes the object structure plus any additional
+ * needed space.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_simple_object_size (
+ union acpi_operand_object *internal_object,
+ acpi_size *obj_length)
+{
+ acpi_size length;
+ acpi_status status = AE_OK;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ut_get_simple_object_size", internal_object);
+
+
+ /* Handle a null object (Could be a uninitialized package element -- which is legal) */
+
+ if (!internal_object) {
+ *obj_length = 0;
+ return_ACPI_STATUS (AE_OK);
+ }
+
+ /* Start with the length of the Acpi object */
+
+ length = sizeof (union acpi_object);
+
+ if (ACPI_GET_DESCRIPTOR_TYPE (internal_object) == ACPI_DESC_TYPE_NAMED) {
+ /* Object is a named object (reference), just return the length */
+
+ *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD (length);
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * The final length depends on the object type
+ * Strings and Buffers are packed right up against the parent object and
+ * must be accessed bytewise or there may be alignment problems on
+ * certain processors
+ */
+ switch (ACPI_GET_OBJECT_TYPE (internal_object)) {
+ case ACPI_TYPE_STRING:
+
+ length += (acpi_size) internal_object->string.length + 1;
+ break;
+
+
+ case ACPI_TYPE_BUFFER:
+
+ length += (acpi_size) internal_object->buffer.length;
+ break;
+
+
+ case ACPI_TYPE_INTEGER:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_POWER:
+
+ /*
+ * No extra data for these types
+ */
+ break;
+
+
+ case ACPI_TYPE_LOCAL_REFERENCE:
+
+ switch (internal_object->reference.opcode) {
+ case AML_INT_NAMEPATH_OP:
+
+ /*
+ * Get the actual length of the full pathname to this object.
+ * The reference will be converted to the pathname to the object
+ */
+ length += ACPI_ROUND_UP_TO_NATIVE_WORD (acpi_ns_get_pathname_length (internal_object->reference.node));
+ break;
+
+ default:
+
+ /*
+ * No other reference opcodes are supported.
+ * Notably, Locals and Args are not supported, but this may be
+ * required eventually.
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Unsupported Reference opcode=%X in object %p\n",
+ internal_object->reference.opcode, internal_object));
+ status = AE_TYPE;
+ break;
+ }
+ break;
+
+
+ default:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unsupported type=%X in object %p\n",
+ ACPI_GET_OBJECT_TYPE (internal_object), internal_object));
+ status = AE_TYPE;
+ break;
+ }
+
+ /*
+ * Account for the space required by the object rounded up to the next
+ * multiple of the machine word size. This keeps each object aligned
+ * on a machine word boundary. (preventing alignment faults on some
+ * machines.)
+ */
+ *obj_length = ACPI_ROUND_UP_TO_NATIVE_WORD (length);
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_get_element_length
+ *
+ * PARAMETERS: acpi_pkg_callback
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get the length of one package element.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_element_length (
+ u8 object_type,
+ union acpi_operand_object *source_object,
+ union acpi_generic_state *state,
+ void *context)
+{
+ acpi_status status = AE_OK;
+ struct acpi_pkg_info *info = (struct acpi_pkg_info *) context;
+ acpi_size object_space;
+
+
+ switch (object_type) {
+ case ACPI_COPY_TYPE_SIMPLE:
+
+ /*
+ * Simple object - just get the size (Null object/entry is handled
+ * here also) and sum it into the running package length
+ */
+ status = acpi_ut_get_simple_object_size (source_object, &object_space);
+ if (ACPI_FAILURE (status)) {
+ return (status);
+ }
+
+ info->length += object_space;
+ break;
+
+
+ case ACPI_COPY_TYPE_PACKAGE:
+
+ /* Package object - nothing much to do here, let the walk handle it */
+
+ info->num_packages++;
+ state->pkg.this_target_obj = NULL;
+ break;
+
+
+ default:
+
+ /* No other types allowed */
+
+ return (AE_BAD_PARAMETER);
+ }
+
+ return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_get_package_object_size
+ *
+ * PARAMETERS: *internal_object - Pointer to the object we are examining
+ * *obj_length - Where the length is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to determine the space required to
+ * contain a package object for return to an external user.
+ *
+ * This is moderately complex since a package contains other
+ * objects including packages.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_package_object_size (
+ union acpi_operand_object *internal_object,
+ acpi_size *obj_length)
+{
+ acpi_status status;
+ struct acpi_pkg_info info;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ut_get_package_object_size", internal_object);
+
+
+ info.length = 0;
+ info.object_space = 0;
+ info.num_packages = 1;
+
+ status = acpi_ut_walk_package_tree (internal_object, NULL,
+ acpi_ut_get_element_length, &info);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ /*
+ * We have handled all of the objects in all levels of the package.
+ * just add the length of the package objects themselves.
+ * Round up to the next machine word.
+ */
+ info.length += ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object)) *
+ (acpi_size) info.num_packages;
+
+ /* Return the total package length */
+
+ *obj_length = info.length;
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_get_object_size
+ *
+ * PARAMETERS: *internal_object - Pointer to the object we are examining
+ * *obj_length - Where the length will be returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to determine the space required to
+ * contain an object for return to an API user.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_get_object_size(
+ union acpi_operand_object *internal_object,
+ acpi_size *obj_length)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_ENTRY ();
+
+
+ if ((ACPI_GET_DESCRIPTOR_TYPE (internal_object) == ACPI_DESC_TYPE_OPERAND) &&
+ (ACPI_GET_OBJECT_TYPE (internal_object) == ACPI_TYPE_PACKAGE)) {
+ status = acpi_ut_get_package_object_size (internal_object, obj_length);
+ }
+ else {
+ status = acpi_ut_get_simple_object_size (internal_object, obj_length);
+ }
+
+ return (status);
+}
+
+