forked from Minki/linux
971 lines
27 KiB
C
971 lines
27 KiB
C
/******************************************************************************
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*
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* Module Name: utcopy - Internal to external object translation utilities
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2008, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utcopy")
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/* Local prototypes */
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static acpi_status
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acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object,
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union acpi_object *external_object,
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u8 * data_space, acpi_size * buffer_space_used);
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static acpi_status
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acpi_ut_copy_ielement_to_ielement(u8 object_type,
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union acpi_operand_object *source_object,
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union acpi_generic_state *state,
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void *context);
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static acpi_status
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acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object,
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u8 * buffer, acpi_size * space_used);
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static acpi_status
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acpi_ut_copy_esimple_to_isimple(union acpi_object *user_obj,
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union acpi_operand_object **return_obj);
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static acpi_status
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acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object,
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union acpi_operand_object **internal_object);
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static acpi_status
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acpi_ut_copy_simple_object(union acpi_operand_object *source_desc,
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union acpi_operand_object *dest_desc);
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static acpi_status
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acpi_ut_copy_ielement_to_eelement(u8 object_type,
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union acpi_operand_object *source_object,
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union acpi_generic_state *state,
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void *context);
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static acpi_status
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acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj,
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union acpi_operand_object *dest_obj,
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struct acpi_walk_state *walk_state);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_copy_isimple_to_esimple
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*
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* PARAMETERS: internal_object - Source object to be copied
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* external_object - Where to return the copied object
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* data_space - Where object data is returned (such as
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* buffer and string data)
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* buffer_space_used - Length of data_space that was used
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to copy a simple internal object to
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* an external object.
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*
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* The data_space buffer is assumed to have sufficient space for
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* the object.
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*
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******************************************************************************/
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static acpi_status
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acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object,
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union acpi_object *external_object,
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u8 * data_space, acpi_size * buffer_space_used)
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{
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acpi_status status = AE_OK;
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ACPI_FUNCTION_TRACE(ut_copy_isimple_to_esimple);
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*buffer_space_used = 0;
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/*
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* Check for NULL object case (could be an uninitialized
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* package element)
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*/
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if (!internal_object) {
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return_ACPI_STATUS(AE_OK);
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}
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/* Always clear the external object */
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ACPI_MEMSET(external_object, 0, sizeof(union acpi_object));
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/*
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* In general, the external object will be the same type as
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* the internal object
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*/
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external_object->type = ACPI_GET_OBJECT_TYPE(internal_object);
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/* However, only a limited number of external types are supported */
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switch (ACPI_GET_OBJECT_TYPE(internal_object)) {
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case ACPI_TYPE_STRING:
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external_object->string.pointer = (char *)data_space;
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external_object->string.length = internal_object->string.length;
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*buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size)
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internal_object->
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string.
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length + 1);
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ACPI_MEMCPY((void *)data_space,
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(void *)internal_object->string.pointer,
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(acpi_size) internal_object->string.length + 1);
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break;
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case ACPI_TYPE_BUFFER:
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external_object->buffer.pointer = data_space;
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external_object->buffer.length = internal_object->buffer.length;
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*buffer_space_used =
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ACPI_ROUND_UP_TO_NATIVE_WORD(internal_object->string.
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length);
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ACPI_MEMCPY((void *)data_space,
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(void *)internal_object->buffer.pointer,
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internal_object->buffer.length);
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break;
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case ACPI_TYPE_INTEGER:
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external_object->integer.value = internal_object->integer.value;
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break;
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case ACPI_TYPE_LOCAL_REFERENCE:
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/* This is an object reference. */
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switch (internal_object->reference.class) {
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case ACPI_REFCLASS_NAME:
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/*
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* For namepath, return the object handle ("reference")
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* We are referring to the namespace node
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*/
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external_object->reference.handle =
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internal_object->reference.node;
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external_object->reference.actual_type =
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acpi_ns_get_type(internal_object->reference.node);
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break;
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default:
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/* All other reference types are unsupported */
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return_ACPI_STATUS(AE_TYPE);
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}
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break;
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case ACPI_TYPE_PROCESSOR:
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external_object->processor.proc_id =
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internal_object->processor.proc_id;
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external_object->processor.pblk_address =
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internal_object->processor.address;
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external_object->processor.pblk_length =
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internal_object->processor.length;
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break;
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case ACPI_TYPE_POWER:
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external_object->power_resource.system_level =
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internal_object->power_resource.system_level;
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external_object->power_resource.resource_order =
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internal_object->power_resource.resource_order;
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break;
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default:
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/*
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* There is no corresponding external object type
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*/
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ACPI_ERROR((AE_INFO,
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"Unsupported object type, cannot convert to external object: %s",
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acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE
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(internal_object))));
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return_ACPI_STATUS(AE_SUPPORT);
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}
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_copy_ielement_to_eelement
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*
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* PARAMETERS: acpi_pkg_callback
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*
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* RETURN: Status
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*
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* DESCRIPTION: Copy one package element to another package element
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*
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******************************************************************************/
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static acpi_status
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acpi_ut_copy_ielement_to_eelement(u8 object_type,
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union acpi_operand_object *source_object,
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union acpi_generic_state *state,
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void *context)
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{
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acpi_status status = AE_OK;
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struct acpi_pkg_info *info = (struct acpi_pkg_info *)context;
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acpi_size object_space;
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u32 this_index;
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union acpi_object *target_object;
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ACPI_FUNCTION_ENTRY();
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this_index = state->pkg.index;
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target_object = (union acpi_object *)
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&((union acpi_object *)(state->pkg.dest_object))->package.
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elements[this_index];
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switch (object_type) {
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case ACPI_COPY_TYPE_SIMPLE:
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/*
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* This is a simple or null object
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*/
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status = acpi_ut_copy_isimple_to_esimple(source_object,
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target_object,
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info->free_space,
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&object_space);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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break;
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case ACPI_COPY_TYPE_PACKAGE:
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/*
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* Build the package object
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*/
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target_object->type = ACPI_TYPE_PACKAGE;
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target_object->package.count = source_object->package.count;
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target_object->package.elements =
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ACPI_CAST_PTR(union acpi_object, info->free_space);
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/*
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* Pass the new package object back to the package walk routine
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*/
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state->pkg.this_target_obj = target_object;
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/*
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* Save space for the array of objects (Package elements)
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* update the buffer length counter
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*/
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object_space = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size)
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target_object->
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package.count *
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sizeof(union
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acpi_object));
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break;
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default:
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return (AE_BAD_PARAMETER);
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}
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info->free_space += object_space;
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info->length += object_space;
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return (status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_copy_ipackage_to_epackage
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*
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* PARAMETERS: internal_object - Pointer to the object we are returning
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* Buffer - Where the object is returned
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* space_used - Where the object length is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to place a package object in a user
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* buffer. A package object by definition contains other objects.
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*
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* The buffer is assumed to have sufficient space for the object.
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* The caller must have verified the buffer length needed using the
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* acpi_ut_get_object_size function before calling this function.
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*
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******************************************************************************/
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static acpi_status
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acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object,
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u8 * buffer, acpi_size * space_used)
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{
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union acpi_object *external_object;
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acpi_status status;
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struct acpi_pkg_info info;
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ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_epackage);
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/*
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* First package at head of the buffer
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*/
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external_object = ACPI_CAST_PTR(union acpi_object, buffer);
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/*
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* Free space begins right after the first package
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*/
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info.length = ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object));
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info.free_space =
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buffer + ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object));
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info.object_space = 0;
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info.num_packages = 1;
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external_object->type = ACPI_GET_OBJECT_TYPE(internal_object);
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external_object->package.count = internal_object->package.count;
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external_object->package.elements = ACPI_CAST_PTR(union acpi_object,
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info.free_space);
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/*
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* Leave room for an array of ACPI_OBJECTS in the buffer
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* and move the free space past it
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*/
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info.length += (acpi_size) external_object->package.count *
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ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object));
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info.free_space += external_object->package.count *
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ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object));
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status = acpi_ut_walk_package_tree(internal_object, external_object,
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acpi_ut_copy_ielement_to_eelement,
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&info);
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*space_used = info.length;
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_copy_iobject_to_eobject
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*
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* PARAMETERS: internal_object - The internal object to be converted
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* buffer_ptr - Where the object is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: This function is called to build an API object to be returned to
|
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* the caller.
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*
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******************************************************************************/
|
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|
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acpi_status
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acpi_ut_copy_iobject_to_eobject(union acpi_operand_object *internal_object,
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struct acpi_buffer *ret_buffer)
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{
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acpi_status status;
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ACPI_FUNCTION_TRACE(ut_copy_iobject_to_eobject);
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if (ACPI_GET_OBJECT_TYPE(internal_object) == ACPI_TYPE_PACKAGE) {
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/*
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* Package object: Copy all subobjects (including
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* nested packages)
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*/
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status = acpi_ut_copy_ipackage_to_epackage(internal_object,
|
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ret_buffer->pointer,
|
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&ret_buffer->length);
|
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} else {
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/*
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* Build a simple object (no nested objects)
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*/
|
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status = acpi_ut_copy_isimple_to_esimple(internal_object,
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ACPI_CAST_PTR(union
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acpi_object,
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ret_buffer->
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pointer),
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ACPI_ADD_PTR(u8,
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ret_buffer->
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pointer,
|
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ACPI_ROUND_UP_TO_NATIVE_WORD
|
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(sizeof
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(union
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acpi_object))),
|
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&ret_buffer->length);
|
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/*
|
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* build simple does not include the object size in the length
|
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* so we add it in here
|
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*/
|
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ret_buffer->length += sizeof(union acpi_object);
|
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}
|
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|
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return_ACPI_STATUS(status);
|
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}
|
|
|
|
/*******************************************************************************
|
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*
|
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* FUNCTION: acpi_ut_copy_esimple_to_isimple
|
|
*
|
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* PARAMETERS: external_object - The external object to be converted
|
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* ret_internal_object - Where the internal object is returned
|
|
*
|
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* 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
|
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* what we do with them!)
|
|
*
|
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******************************************************************************/
|
|
|
|
static acpi_status
|
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acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object,
|
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union acpi_operand_object **ret_internal_object)
|
|
{
|
|
union acpi_operand_object *internal_object;
|
|
|
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ACPI_FUNCTION_TRACE(ut_copy_esimple_to_isimple);
|
|
|
|
/*
|
|
* Simple types supported are: String, Buffer, Integer
|
|
*/
|
|
switch (external_object->type) {
|
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case ACPI_TYPE_STRING:
|
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case ACPI_TYPE_BUFFER:
|
|
case ACPI_TYPE_INTEGER:
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
|
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internal_object = acpi_ut_create_internal_object((u8)
|
|
external_object->
|
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type);
|
|
if (!internal_object) {
|
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return_ACPI_STATUS(AE_NO_MEMORY);
|
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}
|
|
break;
|
|
|
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case ACPI_TYPE_ANY: /* This is the case for a NULL object */
|
|
|
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*ret_internal_object = NULL;
|
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return_ACPI_STATUS(AE_OK);
|
|
|
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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,
|
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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:
|
|
|
|
/* TBD: should validate incoming handle */
|
|
|
|
internal_object->reference.class = ACPI_REFCLASS_NAME;
|
|
internal_object->reference.node =
|
|
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 - 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) {
|
|
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;
|
|
|
|
/* 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;
|
|
|
|
/* New object is not static, regardless of source */
|
|
|
|
dest_desc->common.flags &= ~AOPOBJ_STATIC_POINTER;
|
|
|
|
/* Handle the objects with extra data */
|
|
|
|
switch (ACPI_GET_OBJECT_TYPE(dest_desc)) {
|
|
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;
|
|
|
|
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(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_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
|
|
*
|
|
* RETURN: Status - the status of the call
|
|
*
|
|
* 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 = 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_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: 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);
|
|
}
|