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marcus.erl |
/*******************************************************************************
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*
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* Module Name: rscalc - Calculate stream and list lengths
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2007, R. Byron Moore
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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 <acpi/acresrc.h>
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#include <acpi/amlcode.h>
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#include <acpi/acnamesp.h>
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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME("rscalc")
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/* Local prototypes */
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static u8 acpi_rs_count_set_bits(u16 bit_field);
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static acpi_rs_length
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acpi_rs_struct_option_length(struct acpi_resource_source *resource_source);
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static u32
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acpi_rs_stream_option_length(u32 resource_length, u32 minimum_total_length);
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_count_set_bits
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*
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* PARAMETERS: bit_field - Field in which to count bits
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*
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* RETURN: Number of bits set within the field
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*
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* DESCRIPTION: Count the number of bits set in a resource field. Used for
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* (Short descriptor) interrupt and DMA lists.
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*
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******************************************************************************/
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static u8 acpi_rs_count_set_bits(u16 bit_field)
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{
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u8 bits_set;
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ACPI_FUNCTION_ENTRY();
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for (bits_set = 0; bit_field; bits_set++) {
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/* Zero the least significant bit that is set */
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bit_field &= (bit_field - 1);
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}
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return (bits_set);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_struct_option_length
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*
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* PARAMETERS: resource_source - Pointer to optional descriptor field
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*
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* RETURN: Status
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*
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* DESCRIPTION: Common code to handle optional resource_source_index and
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* resource_source fields in some Large descriptors. Used during
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* list-to-stream conversion
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*
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******************************************************************************/
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static acpi_rs_length
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acpi_rs_struct_option_length(struct acpi_resource_source *resource_source)
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{
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ACPI_FUNCTION_ENTRY();
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/*
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* If the resource_source string is valid, return the size of the string
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* (string_length includes the NULL terminator) plus the size of the
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* resource_source_index (1).
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*/
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if (resource_source->string_ptr) {
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return ((acpi_rs_length) (resource_source->string_length + 1));
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}
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return (0);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_stream_option_length
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*
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* PARAMETERS: resource_length - Length from the resource header
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* minimum_total_length - Minimum length of this resource, before
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* any optional fields. Includes header size
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*
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* RETURN: Length of optional string (0 if no string present)
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*
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* DESCRIPTION: Common code to handle optional resource_source_index and
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* resource_source fields in some Large descriptors. Used during
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* stream-to-list conversion
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*
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******************************************************************************/
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static u32
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acpi_rs_stream_option_length(u32 resource_length,
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u32 minimum_aml_resource_length)
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{
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u32 string_length = 0;
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ACPI_FUNCTION_ENTRY();
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/*
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* The resource_source_index and resource_source are optional elements of some
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* Large-type resource descriptors.
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*/
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/*
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* If the length of the actual resource descriptor is greater than the ACPI
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* spec-defined minimum length, it means that a resource_source_index exists
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* and is followed by a (required) null terminated string. The string length
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* (including the null terminator) is the resource length minus the minimum
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* length, minus one byte for the resource_source_index itself.
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*/
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if (resource_length > minimum_aml_resource_length) {
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/* Compute the length of the optional string */
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string_length =
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resource_length - minimum_aml_resource_length - 1;
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}
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/*
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* Round the length up to a multiple of the native word in order to
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* guarantee that the entire resource descriptor is native word aligned
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*/
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return ((u32) ACPI_ROUND_UP_TO_NATIVE_WORD(string_length));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_aml_length
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*
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* PARAMETERS: Resource - Pointer to the resource linked list
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* size_needed - Where the required size is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Takes a linked list of internal resource descriptors and
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* calculates the size buffer needed to hold the corresponding
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* external resource byte stream.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_get_aml_length(struct acpi_resource * resource, acpi_size * size_needed)
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{
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acpi_size aml_size_needed = 0;
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acpi_rs_length total_size;
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ACPI_FUNCTION_TRACE(rs_get_aml_length);
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| 195 |
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/* Traverse entire list of internal resource descriptors */
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while (resource) {
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| 198 |
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/* Validate the descriptor type */
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if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
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return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
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| 203 |
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}
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| 204 |
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| 205 |
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/* Get the base size of the (external stream) resource descriptor */
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| 206 |
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| 207 |
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total_size = acpi_gbl_aml_resource_sizes[resource->type];
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| 208 |
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| 209 |
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/*
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| 210 |
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* Augment the base size for descriptors with optional and/or
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* variable-length fields
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*/
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switch (resource->type) {
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case ACPI_RESOURCE_TYPE_VENDOR:
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/*
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| 216 |
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* Vendor Defined Resource:
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* For a Vendor Specific resource, if the Length is between 1 and 7
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| 218 |
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* it will be created as a Small Resource data type, otherwise it
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| 219 |
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* is a Large Resource data type.
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| 220 |
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*/
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| 221 |
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if (resource->data.vendor.byte_length > 7) {
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| 223 |
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/* Base size of a Large resource descriptor */
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| 224 |
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| 225 |
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total_size =
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| 226 |
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sizeof(struct aml_resource_large_header);
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| 227 |
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}
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| 228 |
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| 229 |
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/* Add the size of the vendor-specific data */
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total_size = (acpi_rs_length)
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(total_size + resource->data.vendor.byte_length);
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break;
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| 235 |
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case ACPI_RESOURCE_TYPE_END_TAG:
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| 236 |
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/*
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| 237 |
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* End Tag:
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| 238 |
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* We are done -- return the accumulated total size.
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| 239 |
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*/
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| 240 |
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*size_needed = aml_size_needed + total_size;
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| 241 |
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| 242 |
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/* Normal exit */
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| 243 |
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| 244 |
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return_ACPI_STATUS(AE_OK);
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| 245 |
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|
| 246 |
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case ACPI_RESOURCE_TYPE_ADDRESS16:
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| 247 |
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/*
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| 248 |
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* 16-Bit Address Resource:
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| 249 |
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* Add the size of the optional resource_source info
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| 250 |
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*/
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| 251 |
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total_size = (acpi_rs_length)
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| 252 |
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(total_size +
|
| 253 |
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acpi_rs_struct_option_length(&resource->data.
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| 254 |
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address16.
|
| 255 |
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resource_source));
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| 256 |
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break;
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| 257 |
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|
| 258 |
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case ACPI_RESOURCE_TYPE_ADDRESS32:
|
| 259 |
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/*
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| 260 |
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* 32-Bit Address Resource:
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| 261 |
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* Add the size of the optional resource_source info
|
| 262 |
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*/
|
| 263 |
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total_size = (acpi_rs_length)
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| 264 |
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(total_size +
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| 265 |
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acpi_rs_struct_option_length(&resource->data.
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| 266 |
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address32.
|
| 267 |
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resource_source));
|
| 268 |
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break;
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| 269 |
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|
|
| 270 |
|
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case ACPI_RESOURCE_TYPE_ADDRESS64:
|
| 271 |
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/*
|
| 272 |
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* 64-Bit Address Resource:
|
| 273 |
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* Add the size of the optional resource_source info
|
| 274 |
|
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*/
|
| 275 |
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total_size = (acpi_rs_length)
|
| 276 |
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(total_size +
|
| 277 |
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acpi_rs_struct_option_length(&resource->data.
|
| 278 |
|
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address64.
|
| 279 |
|
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resource_source));
|
| 280 |
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break;
|
| 281 |
|
|
|
| 282 |
|
|
case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
|
| 283 |
|
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/*
|
| 284 |
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* Extended IRQ Resource:
|
| 285 |
|
|
* Add the size of each additional optional interrupt beyond the
|
| 286 |
|
|
* required 1 (4 bytes for each u32 interrupt number)
|
| 287 |
|
|
*/
|
| 288 |
|
|
total_size = (acpi_rs_length)
|
| 289 |
|
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(total_size +
|
| 290 |
|
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((resource->data.extended_irq.interrupt_count -
|
| 291 |
|
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1) * 4) +
|
| 292 |
|
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/* Add the size of the optional resource_source info */
|
| 293 |
|
|
acpi_rs_struct_option_length(&resource->data.
|
| 294 |
|
|
extended_irq.
|
| 295 |
|
|
resource_source));
|
| 296 |
|
|
break;
|
| 297 |
|
|
|
| 298 |
|
|
default:
|
| 299 |
|
|
break;
|
| 300 |
|
|
}
|
| 301 |
|
|
|
| 302 |
|
|
/* Update the total */
|
| 303 |
|
|
|
| 304 |
|
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aml_size_needed += total_size;
|
| 305 |
|
|
|
| 306 |
|
|
/* Point to the next object */
|
| 307 |
|
|
|
| 308 |
|
|
resource =
|
| 309 |
|
|
ACPI_ADD_PTR(struct acpi_resource, resource,
|
| 310 |
|
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resource->length);
|
| 311 |
|
|
}
|
| 312 |
|
|
|
| 313 |
|
|
/* Did not find an end_tag resource descriptor */
|
| 314 |
|
|
|
| 315 |
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
| 316 |
|
|
}
|
| 317 |
|
|
|
| 318 |
|
|
/*******************************************************************************
|
| 319 |
|
|
*
|
| 320 |
|
|
* FUNCTION: acpi_rs_get_list_length
|
| 321 |
|
|
*
|
| 322 |
|
|
* PARAMETERS: aml_buffer - Pointer to the resource byte stream
|
| 323 |
|
|
* aml_buffer_length - Size of aml_buffer
|
| 324 |
|
|
* size_needed - Where the size needed is returned
|
| 325 |
|
|
*
|
| 326 |
|
|
* RETURN: Status
|
| 327 |
|
|
*
|
| 328 |
|
|
* DESCRIPTION: Takes an external resource byte stream and calculates the size
|
| 329 |
|
|
* buffer needed to hold the corresponding internal resource
|
| 330 |
|
|
* descriptor linked list.
|
| 331 |
|
|
*
|
| 332 |
|
|
******************************************************************************/
|
| 333 |
|
|
|
| 334 |
|
|
acpi_status
|
| 335 |
|
|
acpi_rs_get_list_length(u8 * aml_buffer,
|
| 336 |
|
|
u32 aml_buffer_length, acpi_size * size_needed)
|
| 337 |
|
|
{
|
| 338 |
|
|
acpi_status status;
|
| 339 |
|
|
u8 *end_aml;
|
| 340 |
|
|
u8 *buffer;
|
| 341 |
|
|
u32 buffer_size;
|
| 342 |
|
|
u16 temp16;
|
| 343 |
|
|
u16 resource_length;
|
| 344 |
|
|
u32 extra_struct_bytes;
|
| 345 |
|
|
u8 resource_index;
|
| 346 |
|
|
u8 minimum_aml_resource_length;
|
| 347 |
|
|
|
| 348 |
|
|
ACPI_FUNCTION_TRACE(rs_get_list_length);
|
| 349 |
|
|
|
| 350 |
|
|
*size_needed = 0;
|
| 351 |
|
|
end_aml = aml_buffer + aml_buffer_length;
|
| 352 |
|
|
|
| 353 |
|
|
/* Walk the list of AML resource descriptors */
|
| 354 |
|
|
|
| 355 |
|
|
while (aml_buffer < end_aml) {
|
| 356 |
|
|
|
| 357 |
|
|
/* Validate the Resource Type and Resource Length */
|
| 358 |
|
|
|
| 359 |
|
|
status = acpi_ut_validate_resource(aml_buffer, &resource_index);
|
| 360 |
|
|
if (ACPI_FAILURE(status)) {
|
| 361 |
|
|
return_ACPI_STATUS(status);
|
| 362 |
|
|
}
|
| 363 |
|
|
|
| 364 |
|
|
/* Get the resource length and base (minimum) AML size */
|
| 365 |
|
|
|
| 366 |
|
|
resource_length = acpi_ut_get_resource_length(aml_buffer);
|
| 367 |
|
|
minimum_aml_resource_length =
|
| 368 |
|
|
acpi_gbl_resource_aml_sizes[resource_index];
|
| 369 |
|
|
|
| 370 |
|
|
/*
|
| 371 |
|
|
* Augment the size for descriptors with optional
|
| 372 |
|
|
* and/or variable length fields
|
| 373 |
|
|
*/
|
| 374 |
|
|
extra_struct_bytes = 0;
|
| 375 |
|
|
buffer =
|
| 376 |
|
|
aml_buffer + acpi_ut_get_resource_header_length(aml_buffer);
|
| 377 |
|
|
|
| 378 |
|
|
switch (acpi_ut_get_resource_type(aml_buffer)) {
|
| 379 |
|
|
case ACPI_RESOURCE_NAME_IRQ:
|
| 380 |
|
|
/*
|
| 381 |
|
|
* IRQ Resource:
|
| 382 |
|
|
* Get the number of bits set in the 16-bit IRQ mask
|
| 383 |
|
|
*/
|
| 384 |
|
|
ACPI_MOVE_16_TO_16(&temp16, buffer);
|
| 385 |
|
|
extra_struct_bytes = acpi_rs_count_set_bits(temp16);
|
| 386 |
|
|
break;
|
| 387 |
|
|
|
| 388 |
|
|
case ACPI_RESOURCE_NAME_DMA:
|
| 389 |
|
|
/*
|
| 390 |
|
|
* DMA Resource:
|
| 391 |
|
|
* Get the number of bits set in the 8-bit DMA mask
|
| 392 |
|
|
*/
|
| 393 |
|
|
extra_struct_bytes = acpi_rs_count_set_bits(*buffer);
|
| 394 |
|
|
break;
|
| 395 |
|
|
|
| 396 |
|
|
case ACPI_RESOURCE_NAME_VENDOR_SMALL:
|
| 397 |
|
|
case ACPI_RESOURCE_NAME_VENDOR_LARGE:
|
| 398 |
|
|
/*
|
| 399 |
|
|
* Vendor Resource:
|
| 400 |
|
|
* Get the number of vendor data bytes
|
| 401 |
|
|
*/
|
| 402 |
|
|
extra_struct_bytes = resource_length;
|
| 403 |
|
|
break;
|
| 404 |
|
|
|
| 405 |
|
|
case ACPI_RESOURCE_NAME_END_TAG:
|
| 406 |
|
|
/*
|
| 407 |
|
|
* End Tag:
|
| 408 |
|
|
* This is the normal exit, add size of end_tag
|
| 409 |
|
|
*/
|
| 410 |
|
|
*size_needed += ACPI_RS_SIZE_MIN;
|
| 411 |
|
|
return_ACPI_STATUS(AE_OK);
|
| 412 |
|
|
|
| 413 |
|
|
case ACPI_RESOURCE_NAME_ADDRESS32:
|
| 414 |
|
|
case ACPI_RESOURCE_NAME_ADDRESS16:
|
| 415 |
|
|
case ACPI_RESOURCE_NAME_ADDRESS64:
|
| 416 |
|
|
/*
|
| 417 |
|
|
* Address Resource:
|
| 418 |
|
|
* Add the size of the optional resource_source
|
| 419 |
|
|
*/
|
| 420 |
|
|
extra_struct_bytes =
|
| 421 |
|
|
acpi_rs_stream_option_length(resource_length,
|
| 422 |
|
|
minimum_aml_resource_length);
|
| 423 |
|
|
break;
|
| 424 |
|
|
|
| 425 |
|
|
case ACPI_RESOURCE_NAME_EXTENDED_IRQ:
|
| 426 |
|
|
/*
|
| 427 |
|
|
* Extended IRQ Resource:
|
| 428 |
|
|
* Using the interrupt_table_length, add 4 bytes for each additional
|
| 429 |
|
|
* interrupt. Note: at least one interrupt is required and is
|
| 430 |
|
|
* included in the minimum descriptor size (reason for the -1)
|
| 431 |
|
|
*/
|
| 432 |
|
|
extra_struct_bytes = (buffer[1] - 1) * sizeof(u32);
|
| 433 |
|
|
|
| 434 |
|
|
/* Add the size of the optional resource_source */
|
| 435 |
|
|
|
| 436 |
|
|
extra_struct_bytes +=
|
| 437 |
|
|
acpi_rs_stream_option_length(resource_length -
|
| 438 |
|
|
extra_struct_bytes,
|
| 439 |
|
|
minimum_aml_resource_length);
|
| 440 |
|
|
break;
|
| 441 |
|
|
|
| 442 |
|
|
default:
|
| 443 |
|
|
break;
|
| 444 |
|
|
}
|
| 445 |
|
|
|
| 446 |
|
|
/*
|
| 447 |
|
|
* Update the required buffer size for the internal descriptor structs
|
| 448 |
|
|
*
|
| 449 |
|
|
* Important: Round the size up for the appropriate alignment. This
|
| 450 |
|
|
* is a requirement on IA64.
|
| 451 |
|
|
*/
|
| 452 |
|
|
buffer_size = acpi_gbl_resource_struct_sizes[resource_index] +
|
| 453 |
|
|
extra_struct_bytes;
|
| 454 |
|
|
buffer_size = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(buffer_size);
|
| 455 |
|
|
|
| 456 |
|
|
*size_needed += buffer_size;
|
| 457 |
|
|
|
| 458 |
|
|
ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
|
| 459 |
|
|
"Type %.2X, AmlLength %.2X InternalLength %.2X\n",
|
| 460 |
|
|
acpi_ut_get_resource_type(aml_buffer),
|
| 461 |
|
|
acpi_ut_get_descriptor_length(aml_buffer),
|
| 462 |
|
|
buffer_size));
|
| 463 |
|
|
|
| 464 |
|
|
/*
|
| 465 |
|
|
* Point to the next resource within the AML stream using the length
|
| 466 |
|
|
* contained in the resource descriptor header
|
| 467 |
|
|
*/
|
| 468 |
|
|
aml_buffer += acpi_ut_get_descriptor_length(aml_buffer);
|
| 469 |
|
|
}
|
| 470 |
|
|
|
| 471 |
|
|
/* Did not find an end_tag resource descriptor */
|
| 472 |
|
|
|
| 473 |
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
| 474 |
|
|
}
|
| 475 |
|
|
|
| 476 |
|
|
/*******************************************************************************
|
| 477 |
|
|
*
|
| 478 |
|
|
* FUNCTION: acpi_rs_get_pci_routing_table_length
|
| 479 |
|
|
*
|
| 480 |
|
|
* PARAMETERS: package_object - Pointer to the package object
|
| 481 |
|
|
* buffer_size_needed - u32 pointer of the size buffer
|
| 482 |
|
|
* needed to properly return the
|
| 483 |
|
|
* parsed data
|
| 484 |
|
|
*
|
| 485 |
|
|
* RETURN: Status
|
| 486 |
|
|
*
|
| 487 |
|
|
* DESCRIPTION: Given a package representing a PCI routing table, this
|
| 488 |
|
|
* calculates the size of the corresponding linked list of
|
| 489 |
|
|
* descriptions.
|
| 490 |
|
|
*
|
| 491 |
|
|
******************************************************************************/
|
| 492 |
|
|
|
| 493 |
|
|
acpi_status
|
| 494 |
|
|
acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
|
| 495 |
|
|
acpi_size * buffer_size_needed)
|
| 496 |
|
|
{
|
| 497 |
|
|
u32 number_of_elements;
|
| 498 |
|
|
acpi_size temp_size_needed = 0;
|
| 499 |
|
|
union acpi_operand_object **top_object_list;
|
| 500 |
|
|
u32 index;
|
| 501 |
|
|
union acpi_operand_object *package_element;
|
| 502 |
|
|
union acpi_operand_object **sub_object_list;
|
| 503 |
|
|
u8 name_found;
|
| 504 |
|
|
u32 table_index;
|
| 505 |
|
|
|
| 506 |
|
|
ACPI_FUNCTION_TRACE(rs_get_pci_routing_table_length);
|
| 507 |
|
|
|
| 508 |
|
|
number_of_elements = package_object->package.count;
|
| 509 |
|
|
|
| 510 |
|
|
/*
|
| 511 |
|
|
* Calculate the size of the return buffer.
|
| 512 |
|
|
* The base size is the number of elements * the sizes of the
|
| 513 |
|
|
* structures. Additional space for the strings is added below.
|
| 514 |
|
|
* The minus one is to subtract the size of the u8 Source[1]
|
| 515 |
|
|
* member because it is added below.
|
| 516 |
|
|
*
|
| 517 |
|
|
* But each PRT_ENTRY structure has a pointer to a string and
|
| 518 |
|
|
* the size of that string must be found.
|
| 519 |
|
|
*/
|
| 520 |
|
|
top_object_list = package_object->package.elements;
|
| 521 |
|
|
|
| 522 |
|
|
for (index = 0; index < number_of_elements; index++) {
|
| 523 |
|
|
|
| 524 |
|
|
/* Dereference the sub-package */
|
| 525 |
|
|
|
| 526 |
|
|
package_element = *top_object_list;
|
| 527 |
|
|
|
| 528 |
|
|
/*
|
| 529 |
|
|
* The sub_object_list will now point to an array of the
|
| 530 |
|
|
* four IRQ elements: Address, Pin, Source and source_index
|
| 531 |
|
|
*/
|
| 532 |
|
|
sub_object_list = package_element->package.elements;
|
| 533 |
|
|
|
| 534 |
|
|
/* Scan the irq_table_elements for the Source Name String */
|
| 535 |
|
|
|
| 536 |
|
|
name_found = FALSE;
|
| 537 |
|
|
|
| 538 |
|
|
for (table_index = 0; table_index < 4 && !name_found;
|
| 539 |
|
|
table_index++) {
|
| 540 |
|
|
if (*sub_object_list && /* Null object allowed */
|
| 541 |
|
|
((ACPI_TYPE_STRING ==
|
| 542 |
|
|
ACPI_GET_OBJECT_TYPE(*sub_object_list)) ||
|
| 543 |
|
|
((ACPI_TYPE_LOCAL_REFERENCE ==
|
| 544 |
|
|
ACPI_GET_OBJECT_TYPE(*sub_object_list)) &&
|
| 545 |
|
|
((*sub_object_list)->reference.opcode ==
|
| 546 |
|
|
AML_INT_NAMEPATH_OP)))) {
|
| 547 |
|
|
name_found = TRUE;
|
| 548 |
|
|
} else {
|
| 549 |
|
|
/* Look at the next element */
|
| 550 |
|
|
|
| 551 |
|
|
sub_object_list++;
|
| 552 |
|
|
}
|
| 553 |
|
|
}
|
| 554 |
|
|
|
| 555 |
|
|
temp_size_needed += (sizeof(struct acpi_pci_routing_table) - 4);
|
| 556 |
|
|
|
| 557 |
|
|
/* Was a String type found? */
|
| 558 |
|
|
|
| 559 |
|
|
if (name_found) {
|
| 560 |
|
|
if (ACPI_GET_OBJECT_TYPE(*sub_object_list) ==
|
| 561 |
|
|
ACPI_TYPE_STRING) {
|
| 562 |
|
|
/*
|
| 563 |
|
|
* The length String.Length field does not include the
|
| 564 |
|
|
* terminating NULL, add 1
|
| 565 |
|
|
*/
|
| 566 |
|
|
temp_size_needed += ((acpi_size)
|
| 567 |
|
|
(*sub_object_list)->string.
|
| 568 |
|
|
length + 1);
|
| 569 |
|
|
} else {
|
| 570 |
|
|
temp_size_needed +=
|
| 571 |
|
|
acpi_ns_get_pathname_length((*sub_object_list)->reference.node);
|
| 572 |
|
|
}
|
| 573 |
|
|
} else {
|
| 574 |
|
|
/*
|
| 575 |
|
|
* If no name was found, then this is a NULL, which is
|
| 576 |
|
|
* translated as a u32 zero.
|
| 577 |
|
|
*/
|
| 578 |
|
|
temp_size_needed += sizeof(u32);
|
| 579 |
|
|
}
|
| 580 |
|
|
|
| 581 |
|
|
/* Round up the size since each element must be aligned */
|
| 582 |
|
|
|
| 583 |
|
|
temp_size_needed = ACPI_ROUND_UP_TO_64BIT(temp_size_needed);
|
| 584 |
|
|
|
| 585 |
|
|
/* Point to the next union acpi_operand_object */
|
| 586 |
|
|
|
| 587 |
|
|
top_object_list++;
|
| 588 |
|
|
}
|
| 589 |
|
|
|
| 590 |
|
|
/*
|
| 591 |
|
|
* Add an extra element to the end of the list, essentially a
|
| 592 |
|
|
* NULL terminator
|
| 593 |
|
|
*/
|
| 594 |
|
|
*buffer_size_needed =
|
| 595 |
|
|
temp_size_needed + sizeof(struct acpi_pci_routing_table);
|
| 596 |
|
|
return_ACPI_STATUS(AE_OK);
|
| 597 |
|
|
}
|
