--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: utcopy - Internal to external object translation utilities
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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 "accommon.h"
+#include "acnamesp.h"
+
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("utcopy")
+
+/* Local prototypes */
+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);
+
+static acpi_status
+acpi_ut_copy_ielement_to_ielement(u8 object_type,
+ union acpi_operand_object *source_object,
+ union acpi_generic_state *state,
+ void *context);
+
+static acpi_status
+acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object,
+ u8 * buffer, acpi_size * space_used);
+
+static acpi_status
+acpi_ut_copy_esimple_to_isimple(union acpi_object *user_obj,
+ union acpi_operand_object **return_obj);
+
+static acpi_status
+acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object,
+ union acpi_operand_object **internal_object);
+
+static acpi_status
+acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
+ union acpi_operand_object *dest_desc);
+
+static acpi_status
+acpi_ut_copy_ielement_to_eelement(u8 object_type,
+ union acpi_operand_object *source_object,
+ union acpi_generic_state *state,
+ void *context);
+
+static 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);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_copy_isimple_to_esimple
+ *
+ * PARAMETERS: internal_object - Source object to be copied
+ * external_object - Where to return the copied object
+ * data_space - Where object data is returned (such as
+ * buffer and string data)
+ * buffer_space_used - Length of data_space that was used
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to copy a simple internal object to
+ * an external object.
+ *
+ * The data_space 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 = internal_object->common.type;
+
+ /* However, only a limited number of external types are supported */
+
+ switch (internal_object->common.type) {
+ 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. */
+
+ switch (internal_object->reference.class) {
+ case ACPI_REFCLASS_NAME:
+ /*
+ * For namepath, return the object handle ("reference")
+ * We are referring to the namespace node
+ */
+ external_object->reference.handle =
+ internal_object->reference.node;
+ external_object->reference.actual_type =
+ acpi_ns_get_type(internal_object->reference.node);
+ break;
+
+ default:
+
+ /* All other reference types are unsupported */
+
+ return_ACPI_STATUS(AE_TYPE);
+ }
+ 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
+ */
+ ACPI_ERROR((AE_INFO,
+ "Unsupported object type, cannot convert to external object: %s",
+ acpi_ut_get_type_name(internal_object->common.
+ 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
+ *
+ ******************************************************************************/
+
+static 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 = internal_object->common.type;
+ 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
+ * ret_buffer - 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 (internal_object->common.type == 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,
+ ACPI_CAST_PTR(union
+ acpi_object,
+ ret_buffer->
+ pointer),
+ ACPI_ADD_PTR(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
+ * ret_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!)
+ *
+ ******************************************************************************/
+
+static 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:
+ case ACPI_TYPE_LOCAL_REFERENCE:
+
+ internal_object = acpi_ut_create_internal_object((u8)
+ external_object->
+ type);
+ if (!internal_object) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+ break;
+
+ case ACPI_TYPE_ANY: /* This is the case for a NULL object */
+
+ *ret_internal_object = NULL;
+ return_ACPI_STATUS(AE_OK);
+
+ default:
+
+ /* All other types are not supported */
+
+ ACPI_ERROR((AE_INFO,
+ "Unsupported object type, cannot convert to internal object: %s",
+ acpi_ut_get_type_name(external_object->type)));
+
+ return_ACPI_STATUS(AE_SUPPORT);
+ }
+
+ /* Must COPY string and buffer contents */
+
+ switch (external_object->type) {
+ case ACPI_TYPE_STRING:
+
+ internal_object->string.pointer =
+ ACPI_ALLOCATE_ZEROED((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_ALLOCATE_ZEROED(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;
+
+ /* Mark buffer data valid */
+
+ internal_object->buffer.flags |= AOPOBJ_DATA_VALID;
+ break;
+
+ case ACPI_TYPE_INTEGER:
+
+ internal_object->integer.value = external_object->integer.value;
+ break;
+
+ case ACPI_TYPE_LOCAL_REFERENCE:
+
+ /* An incoming reference is defined to be a namespace node */
+
+ internal_object->reference.class = ACPI_REFCLASS_REFOF;
+ internal_object->reference.object =
+ external_object->reference.handle;
+ 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);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_copy_epackage_to_ipackage
+ *
+ * PARAMETERS: external_object - The external object to be converted
+ * internal_object - Where the internal object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Copy an external package object to an internal package.
+ * Handles nested packages.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object,
+ union acpi_operand_object **internal_object)
+{
+ acpi_status status = AE_OK;
+ union acpi_operand_object *package_object;
+ union acpi_operand_object **package_elements;
+ u32 i;
+
+ ACPI_FUNCTION_TRACE(ut_copy_epackage_to_ipackage);
+
+ /* Create the package object */
+
+ package_object =
+ acpi_ut_create_package_object(external_object->package.count);
+ if (!package_object) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ package_elements = package_object->package.elements;
+
+ /*
+ * Recursive implementation. Probably ok, since nested external packages
+ * as parameters should be very rare.
+ */
+ for (i = 0; i < external_object->package.count; i++) {
+ status =
+ acpi_ut_copy_eobject_to_iobject(&external_object->package.
+ elements[i],
+ &package_elements[i]);
+ if (ACPI_FAILURE(status)) {
+
+ /* Truncate package and delete it */
+
+ package_object->package.count = i;
+ package_elements[i] = NULL;
+ acpi_ut_remove_reference(package_object);
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /* Mark package data valid */
+
+ package_object->package.flags |= AOPOBJ_DATA_VALID;
+
+ *internal_object = package_object;
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_copy_eobject_to_iobject
+ *
+ * PARAMETERS: external_object - The external object to be converted
+ * internal_object - Where the internal object is returned
+ *
+ * RETURN: Status
+ *
+ * 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) {
+ status =
+ acpi_ut_copy_epackage_to_ipackage(external_object,
+ internal_object);
+ } 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.
+ *
+ ******************************************************************************/
+
+static 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;
+ acpi_status status;
+ acpi_size copy_size;
+
+ /* 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.
+ * Note: Source can be either an operand object or namespace node.
+ */
+ copy_size = sizeof(union acpi_operand_object);
+ if (ACPI_GET_DESCRIPTOR_TYPE(source_desc) == ACPI_DESC_TYPE_NAMED) {
+ copy_size = sizeof(struct acpi_namespace_node);
+ }
+
+ ACPI_MEMCPY(ACPI_CAST_PTR(char, dest_desc),
+ ACPI_CAST_PTR(char, source_desc), copy_size);
+
+ /* Restore the saved fields */
+
+ dest_desc->common.reference_count = reference_count;
+ dest_desc->common.next_object = next_object;
+
+ /* New object is not static, regardless of source */
+
+ dest_desc->common.flags &= ~AOPOBJ_STATIC_POINTER;
+
+ /* Handle the objects with extra data */
+
+ switch (dest_desc->common.type) {
+ case ACPI_TYPE_BUFFER:
+ /*
+ * Allocate and copy the actual buffer if and only if:
+ * 1) There is a valid buffer pointer
+ * 2) The buffer has a length > 0
+ */
+ if ((source_desc->buffer.pointer) &&
+ (source_desc->buffer.length)) {
+ dest_desc->buffer.pointer =
+ ACPI_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
+ * (Pointer to a NULL string is allowed)
+ */
+ if (source_desc->string.pointer) {
+ dest_desc->string.pointer =
+ ACPI_ALLOCATE((acpi_size) source_desc->string.
+ length + 1);
+ if (!dest_desc->string.pointer) {
+ return (AE_NO_MEMORY);
+ }
+
+ /* Copy the actual string data */
+
+ 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
+ *
+ * DDBHandle reference (from Load/load_table) is a special reference,
+ * it does not have a Reference.Object, so does not need to
+ * increase the reference count
+ */
+ if (source_desc->reference.class == ACPI_REFCLASS_TABLE) {
+ break;
+ }
+
+ acpi_ut_add_reference(source_desc->reference.object);
+ break;
+
+ case ACPI_TYPE_REGION:
+ /*
+ * We copied the Region Handler, so we now must add a reference
+ */
+ if (dest_desc->region.handler) {
+ acpi_ut_add_reference(dest_desc->region.handler);
+ }
+ break;
+
+ /*
+ * For Mutex and Event objects, we cannot simply copy the underlying
+ * OS object. We must create a new one.
+ */
+ case ACPI_TYPE_MUTEX:
+
+ status = acpi_os_create_mutex(&dest_desc->mutex.os_mutex);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ break;
+
+ case ACPI_TYPE_EVENT:
+
+ status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
+ &dest_desc->event.
+ os_semaphore);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+ 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
+ *
+ ******************************************************************************/
+
+static 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(source_object->
+ common.type);
+ 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_package_object(source_object->package.count);
+ if (!target_object) {
+ return (AE_NO_MEMORY);
+ }
+
+ target_object->common.flags = source_object->common.flags;
+
+ /* 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
+ * walk_state - Current Walk state descriptor
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: This function is called to copy an internal package object
+ * into another internal package object.
+ *
+ ******************************************************************************/
+
+static 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 = source_obj->common.type;
+ 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_ALLOCATE_ZEROED(((acpi_size)
+ source_obj->package.
+ count +
+ 1) * sizeof(void *));
+ if (!dest_obj->package.elements) {
+ ACPI_ERROR((AE_INFO, "Package allocation failure"));
+ 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: source_desc - The internal object to be copied
+ * dest_desc - Where the copied object is returned
+ * walk_state - Current walk state
+ *
+ * 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(source_desc->common.type);
+ if (!*dest_desc) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ /* Copy the object and possible subobjects */
+
+ if (source_desc->common.type == 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);
+ }
+
+ /* Delete the allocated object if copy failed */
+
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_remove_reference(*dest_desc);
+ }
+
+ return_ACPI_STATUS(status);
+}
Code Review / kvmfornfv.git / blobdiff