Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 930 insertions, 0 deletions

diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c
new file mode 100644
index 00000000000..0fcd98bde0d
--- /dev/null
+++ b/drivers/acpi/utilities/utcopy.c
@@ -0,0 +1,930 @@
+/******************************************************************************
+ *
+ * Module Name: utcopy - Internal to external object translation utilities
+ *
+ *****************************************************************************/
+
+/*
+ * 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/amlcode.h>
+
+
+#define _COMPONENT          ACPI_UTILITIES
+	 ACPI_MODULE_NAME    ("utcopy")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_isimple_to_esimple
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are examining
+ *              *Buffer             - Where the object is returned
+ *              *space_used         - Where the data length is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to place a simple object in a user
+ *              buffer.
+ *
+ *              The buffer is assumed to have sufficient space for the object.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_isimple_to_esimple (
+	union acpi_operand_object       *internal_object,
+	union acpi_object               *external_object,
+	u8                              *data_space,
+	acpi_size                       *buffer_space_used)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_isimple_to_esimple");
+
+
+	*buffer_space_used = 0;
+
+	/*
+	 * Check for NULL object case (could be an uninitialized
+	 * package element)
+	 */
+	if (!internal_object) {
+		return_ACPI_STATUS (AE_OK);
+	}
+
+	/* Always clear the external object */
+
+	ACPI_MEMSET (external_object, 0, sizeof (union acpi_object));
+
+	/*
+	 * In general, the external object will be the same type as
+	 * the internal object
+	 */
+	external_object->type = ACPI_GET_OBJECT_TYPE (internal_object);
+
+	/* However, only a limited number of external types are supported */
+
+	switch (ACPI_GET_OBJECT_TYPE (internal_object)) {
+	case ACPI_TYPE_STRING:
+
+		external_object->string.pointer = (char *) data_space;
+		external_object->string.length = internal_object->string.length;
+		*buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD ((acpi_size) internal_object->string.length + 1);
+
+		ACPI_MEMCPY ((void *) data_space, (void *) internal_object->string.pointer,
+				 (acpi_size) internal_object->string.length + 1);
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		external_object->buffer.pointer = data_space;
+		external_object->buffer.length = internal_object->buffer.length;
+		*buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD (internal_object->string.length);
+
+		ACPI_MEMCPY ((void *) data_space, (void *) internal_object->buffer.pointer,
+				 internal_object->buffer.length);
+		break;
+
+
+	case ACPI_TYPE_INTEGER:
+
+		external_object->integer.value = internal_object->integer.value;
+		break;
+
+
+	case ACPI_TYPE_LOCAL_REFERENCE:
+
+		/*
+		 * This is an object reference.  Attempt to dereference it.
+		 */
+		switch (internal_object->reference.opcode) {
+		case AML_INT_NAMEPATH_OP:
+
+			/* For namepath, return the object handle ("reference") */
+
+		default:
+			/*
+			 * Use the object type of "Any" to indicate a reference
+			 * to object containing a handle to an ACPI named object.
+			 */
+			external_object->type = ACPI_TYPE_ANY;
+			external_object->reference.handle = internal_object->reference.node;
+			break;
+		}
+		break;
+
+
+	case ACPI_TYPE_PROCESSOR:
+
+		external_object->processor.proc_id    = internal_object->processor.proc_id;
+		external_object->processor.pblk_address = internal_object->processor.address;
+		external_object->processor.pblk_length = internal_object->processor.length;
+		break;
+
+
+	case ACPI_TYPE_POWER:
+
+		external_object->power_resource.system_level =
+				   internal_object->power_resource.system_level;
+
+		external_object->power_resource.resource_order =
+				   internal_object->power_resource.resource_order;
+		break;
+
+
+	default:
+		/*
+		 * There is no corresponding external object type
+		 */
+		return_ACPI_STATUS (AE_SUPPORT);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ielement_to_eelement
+ *
+ * PARAMETERS:  acpi_pkg_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Copy one package element to another package element
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_ielement_to_eelement (
+	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;
+	u32                             this_index;
+	union acpi_object               *target_object;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	this_index   = state->pkg.index;
+	target_object = (union acpi_object *)
+			  &((union acpi_object *)(state->pkg.dest_object))->package.elements[this_index];
+
+	switch (object_type) {
+	case ACPI_COPY_TYPE_SIMPLE:
+
+		/*
+		 * This is a simple or null object
+		 */
+		status = acpi_ut_copy_isimple_to_esimple (source_object,
+				  target_object, info->free_space, &object_space);
+		if (ACPI_FAILURE (status)) {
+			return (status);
+		}
+		break;
+
+
+	case ACPI_COPY_TYPE_PACKAGE:
+
+		/*
+		 * Build the package object
+		 */
+		target_object->type             = ACPI_TYPE_PACKAGE;
+		target_object->package.count    = source_object->package.count;
+		target_object->package.elements = ACPI_CAST_PTR (union acpi_object, info->free_space);
+
+		/*
+		 * Pass the new package object back to the package walk routine
+		 */
+		state->pkg.this_target_obj = target_object;
+
+		/*
+		 * Save space for the array of objects (Package elements)
+		 * update the buffer length counter
+		 */
+		object_space = ACPI_ROUND_UP_TO_NATIVE_WORD (
+				   (acpi_size) target_object->package.count * sizeof (union acpi_object));
+		break;
+
+
+	default:
+		return (AE_BAD_PARAMETER);
+	}
+
+	info->free_space  += object_space;
+	info->length      += object_space;
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ipackage_to_epackage
+ *
+ * PARAMETERS:  *internal_object    - Pointer to the object we are returning
+ *              *Buffer             - Where the object is returned
+ *              *space_used         - Where the object length is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to place a package object in a user
+ *              buffer.  A package object by definition contains other objects.
+ *
+ *              The buffer is assumed to have sufficient space for the object.
+ *              The caller must have verified the buffer length needed using the
+ *              acpi_ut_get_object_size function before calling this function.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_ipackage_to_epackage (
+	union acpi_operand_object       *internal_object,
+	u8                              *buffer,
+	acpi_size                       *space_used)
+{
+	union acpi_object               *external_object;
+	acpi_status                     status;
+	struct acpi_pkg_info            info;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_ipackage_to_epackage");
+
+
+	/*
+	 * First package at head of the buffer
+	 */
+	external_object = ACPI_CAST_PTR (union acpi_object, buffer);
+
+	/*
+	 * Free space begins right after the first package
+	 */
+	info.length      = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+	info.free_space  = buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+	info.object_space = 0;
+	info.num_packages = 1;
+
+	external_object->type            = ACPI_GET_OBJECT_TYPE (internal_object);
+	external_object->package.count   = internal_object->package.count;
+	external_object->package.elements = ACPI_CAST_PTR (union acpi_object, info.free_space);
+
+	/*
+	 * Leave room for an array of ACPI_OBJECTS in the buffer
+	 * and move the free space past it
+	 */
+	info.length    += (acpi_size) external_object->package.count *
+			 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+	info.free_space += external_object->package.count *
+			 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
+
+	status = acpi_ut_walk_package_tree (internal_object, external_object,
+			 acpi_ut_copy_ielement_to_eelement, &info);
+
+	*space_used = info.length;
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_iobject_to_eobject
+ *
+ * PARAMETERS:  *internal_object    - The internal object to be converted
+ *              *buffer_ptr         - Where the object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to build an API object to be returned to
+ *              the caller.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_iobject_to_eobject (
+	union acpi_operand_object       *internal_object,
+	struct acpi_buffer              *ret_buffer)
+{
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_iobject_to_eobject");
+
+
+	if (ACPI_GET_OBJECT_TYPE (internal_object) == ACPI_TYPE_PACKAGE) {
+		/*
+		 * Package object:  Copy all subobjects (including
+		 * nested packages)
+		 */
+		status = acpi_ut_copy_ipackage_to_epackage (internal_object,
+				  ret_buffer->pointer, &ret_buffer->length);
+	}
+	else {
+		/*
+		 * Build a simple object (no nested objects)
+		 */
+		status = acpi_ut_copy_isimple_to_esimple (internal_object,
+				  (union acpi_object *) ret_buffer->pointer,
+				  ((u8 *) ret_buffer->pointer +
+				  ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object))),
+				  &ret_buffer->length);
+		/*
+		 * build simple does not include the object size in the length
+		 * so we add it in here
+		 */
+		ret_buffer->length += sizeof (union acpi_object);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_esimple_to_isimple
+ *
+ * PARAMETERS:  *external_object   - The external object to be converted
+ *              *internal_object   - Where the internal object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function copies an external object to an internal one.
+ *              NOTE: Pointers can be copied, we don't need to copy data.
+ *              (The pointers have to be valid in our address space no matter
+ *              what we do with them!)
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_esimple_to_isimple (
+	union acpi_object               *external_object,
+	union acpi_operand_object       **ret_internal_object)
+{
+	union acpi_operand_object       *internal_object;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_esimple_to_isimple");
+
+
+	/*
+	 * Simple types supported are: String, Buffer, Integer
+	 */
+	switch (external_object->type) {
+	case ACPI_TYPE_STRING:
+	case ACPI_TYPE_BUFFER:
+	case ACPI_TYPE_INTEGER:
+
+		internal_object = acpi_ut_create_internal_object ((u8) external_object->type);
+		if (!internal_object) {
+			return_ACPI_STATUS (AE_NO_MEMORY);
+		}
+		break;
+
+	default:
+		/* All other types are not supported */
+
+		return_ACPI_STATUS (AE_SUPPORT);
+	}
+
+
+	/* Must COPY string and buffer contents */
+
+	switch (external_object->type) {
+	case ACPI_TYPE_STRING:
+
+		internal_object->string.pointer =
+			ACPI_MEM_CALLOCATE ((acpi_size) external_object->string.length + 1);
+		if (!internal_object->string.pointer) {
+			goto error_exit;
+		}
+
+		ACPI_MEMCPY (internal_object->string.pointer,
+				  external_object->string.pointer,
+				  external_object->string.length);
+
+		internal_object->string.length = external_object->string.length;
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		internal_object->buffer.pointer =
+			ACPI_MEM_CALLOCATE (external_object->buffer.length);
+		if (!internal_object->buffer.pointer) {
+			goto error_exit;
+		}
+
+		ACPI_MEMCPY (internal_object->buffer.pointer,
+				  external_object->buffer.pointer,
+				  external_object->buffer.length);
+
+		internal_object->buffer.length = external_object->buffer.length;
+		break;
+
+
+	case ACPI_TYPE_INTEGER:
+
+		internal_object->integer.value  = external_object->integer.value;
+		break;
+
+	default:
+		/* Other types can't get here */
+		break;
+	}
+
+	*ret_internal_object = internal_object;
+	return_ACPI_STATUS (AE_OK);
+
+
+error_exit:
+	acpi_ut_remove_reference (internal_object);
+	return_ACPI_STATUS (AE_NO_MEMORY);
+}
+
+
+#ifdef ACPI_FUTURE_IMPLEMENTATION
+
+/* Code to convert packages that are parameters to control methods */
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_epackage_to_ipackage
+ *
+ * PARAMETERS:  *internal_object   - Pointer to the object we are returning
+ *              *Buffer            - Where the object is returned
+ *              *space_used        - Where the length of the object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: This function is called to place a package object in a user
+ *              buffer.  A package object by definition contains other objects.
+ *
+ *              The buffer is assumed to have sufficient space for the object.
+ *              The caller must have verified the buffer length needed using the
+ *              acpi_ut_get_object_size function before calling this function.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_epackage_to_ipackage (
+	union acpi_operand_object       *internal_object,
+	u8                              *buffer,
+	u32                             *space_used)
+{
+	u8                              *free_space;
+	union acpi_object               *external_object;
+	u32                             length = 0;
+	u32                             this_index;
+	u32                             object_space = 0;
+	union acpi_operand_object       *this_internal_obj;
+	union acpi_object               *this_external_obj;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_epackage_to_ipackage");
+
+
+	/*
+	 * First package at head of the buffer
+	 */
+	external_object = (union acpi_object *)buffer;
+
+	/*
+	 * Free space begins right after the first package
+	 */
+	free_space = buffer + sizeof(union acpi_object);
+
+
+	external_object->type              = ACPI_GET_OBJECT_TYPE (internal_object);
+	external_object->package.count     = internal_object->package.count;
+	external_object->package.elements  = (union acpi_object *)free_space;
+
+	/*
+	 * Build an array of ACPI_OBJECTS in the buffer
+	 * and move the free space past it
+	 */
+	free_space += external_object->package.count * sizeof(union acpi_object);
+
+
+	/* Call walk_package */
+
+}
+
+#endif /* Future implementation */
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_eobject_to_iobject
+ *
+ * PARAMETERS:  *internal_object   - The external object to be converted
+ *              *buffer_ptr     - Where the internal object is returned
+ *
+ * RETURN:      Status          - the status of the call
+ *
+ * DESCRIPTION: Converts an external object to an internal object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_eobject_to_iobject (
+	union acpi_object               *external_object,
+	union acpi_operand_object       **internal_object)
+{
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_eobject_to_iobject");
+
+
+	if (external_object->type == ACPI_TYPE_PACKAGE) {
+		/*
+		 * Packages as external input to control methods are not supported,
+		 */
+		ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+			"Packages as parameters not implemented!\n"));
+
+		return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
+	}
+
+	else {
+		/*
+		 * Build a simple object (no nested objects)
+		 */
+		status = acpi_ut_copy_esimple_to_isimple (external_object, internal_object);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_simple_object
+ *
+ * PARAMETERS:  source_desc         - The internal object to be copied
+ *              dest_desc           - New target object
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Simple copy of one internal object to another.  Reference count
+ *              of the destination object is preserved.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_simple_object (
+	union acpi_operand_object       *source_desc,
+	union acpi_operand_object       *dest_desc)
+{
+	u16                             reference_count;
+	union acpi_operand_object       *next_object;
+
+
+	/* Save fields from destination that we don't want to overwrite */
+
+	reference_count = dest_desc->common.reference_count;
+	next_object = dest_desc->common.next_object;
+
+	/* Copy the entire source object over the destination object*/
+
+	ACPI_MEMCPY ((char *) dest_desc, (char *) source_desc,
+			  sizeof (union acpi_operand_object));
+
+	/* Restore the saved fields */
+
+	dest_desc->common.reference_count = reference_count;
+	dest_desc->common.next_object = next_object;
+
+	/* Handle the objects with extra data */
+
+	switch (ACPI_GET_OBJECT_TYPE (dest_desc)) {
+	case ACPI_TYPE_BUFFER:
+
+		dest_desc->buffer.node = NULL;
+		dest_desc->common.flags = source_desc->common.flags;
+
+		/*
+		 * Allocate and copy the actual buffer if and only if:
+		 * 1) There is a valid buffer pointer
+		 * 2) The buffer is not static (not in an ACPI table) (in this case,
+		 *    the actual pointer was already copied above)
+		 */
+		if ((source_desc->buffer.pointer) &&
+			(!(source_desc->common.flags & AOPOBJ_STATIC_POINTER))) {
+			dest_desc->buffer.pointer = NULL;
+
+			/* Create an actual buffer only if length > 0 */
+
+			if (source_desc->buffer.length) {
+				dest_desc->buffer.pointer =
+					ACPI_MEM_ALLOCATE (source_desc->buffer.length);
+				if (!dest_desc->buffer.pointer) {
+					return (AE_NO_MEMORY);
+				}
+
+				/* Copy the actual buffer data */
+
+				ACPI_MEMCPY (dest_desc->buffer.pointer,
+						source_desc->buffer.pointer,
+						source_desc->buffer.length);
+			}
+		}
+		break;
+
+	case ACPI_TYPE_STRING:
+
+		/*
+		 * Allocate and copy the actual string if and only if:
+		 * 1) There is a valid string pointer
+		 * 2) The string is not static (not in an ACPI table) (in this case,
+		 *    the actual pointer was already copied above)
+		 */
+		if ((source_desc->string.pointer) &&
+			(!(source_desc->common.flags & AOPOBJ_STATIC_POINTER))) {
+			dest_desc->string.pointer =
+				ACPI_MEM_ALLOCATE ((acpi_size) source_desc->string.length + 1);
+			if (!dest_desc->string.pointer) {
+				return (AE_NO_MEMORY);
+			}
+
+			ACPI_MEMCPY (dest_desc->string.pointer, source_desc->string.pointer,
+					  (acpi_size) source_desc->string.length + 1);
+		}
+		break;
+
+	case ACPI_TYPE_LOCAL_REFERENCE:
+		/*
+		 * We copied the reference object, so we now must add a reference
+		 * to the object pointed to by the reference
+		 */
+		acpi_ut_add_reference (source_desc->reference.object);
+		break;
+
+	default:
+		/* Nothing to do for other simple objects */
+		break;
+	}
+
+	return (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ielement_to_ielement
+ *
+ * PARAMETERS:  acpi_pkg_callback
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Copy one package element to another package element
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_ielement_to_ielement (
+	u8                              object_type,
+	union acpi_operand_object       *source_object,
+	union acpi_generic_state        *state,
+	void                            *context)
+{
+	acpi_status                     status = AE_OK;
+	u32                             this_index;
+	union acpi_operand_object       **this_target_ptr;
+	union acpi_operand_object       *target_object;
+
+
+	ACPI_FUNCTION_ENTRY ();
+
+
+	this_index    = state->pkg.index;
+	this_target_ptr = (union acpi_operand_object **)
+			   &state->pkg.dest_object->package.elements[this_index];
+
+	switch (object_type) {
+	case ACPI_COPY_TYPE_SIMPLE:
+
+		/* A null source object indicates a (legal) null package element */
+
+		if (source_object) {
+			/*
+			 * This is a simple object, just copy it
+			 */
+			target_object = acpi_ut_create_internal_object (
+					   ACPI_GET_OBJECT_TYPE (source_object));
+			if (!target_object) {
+				return (AE_NO_MEMORY);
+			}
+
+			status = acpi_ut_copy_simple_object (source_object, target_object);
+			if (ACPI_FAILURE (status)) {
+				goto error_exit;
+			}
+
+			*this_target_ptr = target_object;
+		}
+		else {
+			/* Pass through a null element */
+
+			*this_target_ptr = NULL;
+		}
+		break;
+
+
+	case ACPI_COPY_TYPE_PACKAGE:
+
+		/*
+		 * This object is a package - go down another nesting level
+		 * Create and build the package object
+		 */
+		target_object = acpi_ut_create_internal_object (ACPI_TYPE_PACKAGE);
+		if (!target_object) {
+			return (AE_NO_MEMORY);
+		}
+
+		target_object->package.count = source_object->package.count;
+		target_object->common.flags = source_object->common.flags;
+
+		/*
+		 * Create the object array
+		 */
+		target_object->package.elements =
+			ACPI_MEM_CALLOCATE (((acpi_size) source_object->package.count + 1) *
+					 sizeof (void *));
+		if (!target_object->package.elements) {
+			status = AE_NO_MEMORY;
+			goto error_exit;
+		}
+
+		/*
+		 * Pass the new package object back to the package walk routine
+		 */
+		state->pkg.this_target_obj = target_object;
+
+		/*
+		 * Store the object pointer in the parent package object
+		 */
+		*this_target_ptr = target_object;
+		break;
+
+
+	default:
+		return (AE_BAD_PARAMETER);
+	}
+
+	return (status);
+
+error_exit:
+	acpi_ut_remove_reference (target_object);
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_ipackage_to_ipackage
+ *
+ * PARAMETERS:  *source_obj     - Pointer to the source package object
+ *              *dest_obj       - Where the internal object is returned
+ *
+ * RETURN:      Status          - the status of the call
+ *
+ * DESCRIPTION: This function is called to copy an internal package object
+ *              into another internal package object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_ipackage_to_ipackage (
+	union acpi_operand_object       *source_obj,
+	union acpi_operand_object       *dest_obj,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_ipackage_to_ipackage");
+
+
+	dest_obj->common.type   = ACPI_GET_OBJECT_TYPE (source_obj);
+	dest_obj->common.flags  = source_obj->common.flags;
+	dest_obj->package.count = source_obj->package.count;
+
+	/*
+	 * Create the object array and walk the source package tree
+	 */
+	dest_obj->package.elements = ACPI_MEM_CALLOCATE (
+			   ((acpi_size) source_obj->package.count + 1) *
+			   sizeof (void *));
+	if (!dest_obj->package.elements) {
+		ACPI_REPORT_ERROR (
+			("aml_build_copy_internal_package_object: Package allocation failure\n"));
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/*
+	 * Copy the package element-by-element by walking the package "tree".
+	 * This handles nested packages of arbitrary depth.
+	 */
+	status = acpi_ut_walk_package_tree (source_obj, dest_obj,
+			 acpi_ut_copy_ielement_to_ielement, walk_state);
+	if (ACPI_FAILURE (status)) {
+		/* On failure, delete the destination package object */
+
+		acpi_ut_remove_reference (dest_obj);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_copy_iobject_to_iobject
+ *
+ * PARAMETERS:  walk_state          - Current walk state
+ *              source_desc         - The internal object to be copied
+ *              dest_desc           - Where the copied object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Copy an internal object to a new internal object
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ut_copy_iobject_to_iobject (
+	union acpi_operand_object       *source_desc,
+	union acpi_operand_object       **dest_desc,
+	struct acpi_walk_state          *walk_state)
+{
+	acpi_status                     status = AE_OK;
+
+
+	ACPI_FUNCTION_TRACE ("ut_copy_iobject_to_iobject");
+
+
+	/* Create the top level object */
+
+	*dest_desc = acpi_ut_create_internal_object (ACPI_GET_OBJECT_TYPE (source_desc));
+	if (!*dest_desc) {
+		return_ACPI_STATUS (AE_NO_MEMORY);
+	}
+
+	/* Copy the object and possible subobjects */
+
+	if (ACPI_GET_OBJECT_TYPE (source_desc) == ACPI_TYPE_PACKAGE) {
+		status = acpi_ut_copy_ipackage_to_ipackage (source_desc, *dest_desc,
+				  walk_state);
+	}
+	else {
+		status = acpi_ut_copy_simple_object (source_desc, *dest_desc);
+	}
+
+	return_ACPI_STATUS (status);
+}
+
+