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1275 |
phoenix |
/*******************************************************************************
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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 - 2004, 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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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_byte_stream_length
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*
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* PARAMETERS: linked_list - Pointer to the resource linked list
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* size_needed - u32 pointer of the size buffer needed
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* to properly return the parsed data
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*
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* RETURN: Status
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*
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* DESCRIPTION: Takes the resource byte stream and parses it once, calculating
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* the size buffer needed to hold the linked list that conveys
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* the resource data.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_get_byte_stream_length (
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struct acpi_resource *linked_list,
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acpi_size *size_needed)
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{
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acpi_size byte_stream_size_needed = 0;
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acpi_size segment_size;
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struct acpi_resource_ext_irq *ex_irq = NULL;
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u8 done = FALSE;
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ACPI_FUNCTION_TRACE ("rs_get_byte_stream_length");
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while (!done) {
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/*
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* Init the variable that will hold the size to add to the total.
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*/
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segment_size = 0;
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switch (linked_list->id) {
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case ACPI_RSTYPE_IRQ:
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/*
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* IRQ Resource
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* For an IRQ Resource, Byte 3, although optional, will
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* always be created - it holds IRQ information.
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*/
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segment_size = 4;
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break;
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case ACPI_RSTYPE_DMA:
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/*
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* DMA Resource
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* For this resource the size is static
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*/
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segment_size = 3;
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break;
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case ACPI_RSTYPE_START_DPF:
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/*
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* Start Dependent Functions Resource
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* For a start_dependent_functions Resource, Byte 1,
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* although optional, will always be created.
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*/
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segment_size = 2;
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break;
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case ACPI_RSTYPE_END_DPF:
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/*
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* End Dependent Functions Resource
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* For this resource the size is static
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*/
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segment_size = 1;
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break;
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case ACPI_RSTYPE_IO:
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/*
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* IO Port Resource
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* For this resource the size is static
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*/
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segment_size = 8;
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break;
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case ACPI_RSTYPE_FIXED_IO:
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/*
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* Fixed IO Port Resource
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* For this resource the size is static
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*/
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segment_size = 4;
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break;
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case ACPI_RSTYPE_VENDOR:
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/*
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* Vendor Defined Resource
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* For a Vendor Specific resource, if the Length is
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* between 1 and 7 it will be created as a Small
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* Resource data type, otherwise it is a Large
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* Resource data type.
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*/
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if (linked_list->data.vendor_specific.length > 7) {
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segment_size = 3;
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}
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else {
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segment_size = 1;
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}
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segment_size += linked_list->data.vendor_specific.length;
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break;
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case ACPI_RSTYPE_END_TAG:
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/*
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* End Tag
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* For this resource the size is static
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*/
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segment_size = 2;
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done = TRUE;
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break;
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case ACPI_RSTYPE_MEM24:
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/*
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* 24-Bit Memory Resource
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* For this resource the size is static
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*/
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segment_size = 12;
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break;
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case ACPI_RSTYPE_MEM32:
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/*
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* 32-Bit Memory Range Resource
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* For this resource the size is static
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*/
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segment_size = 20;
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break;
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case ACPI_RSTYPE_FIXED_MEM32:
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/*
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* 32-Bit Fixed Memory Resource
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* For this resource the size is static
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*/
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segment_size = 12;
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break;
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| 191 |
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case ACPI_RSTYPE_ADDRESS16:
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/*
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* 16-Bit Address Resource
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* The base size of this byte stream is 16. If a
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* Resource Source string is not NULL, add 1 for
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* the Index + the length of the null terminated
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* string Resource Source + 1 for the null.
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*/
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segment_size = 16;
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if (linked_list->data.address16.resource_source.string_ptr) {
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segment_size += linked_list->data.address16.resource_source.string_length;
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segment_size++;
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}
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break;
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| 207 |
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case ACPI_RSTYPE_ADDRESS32:
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/*
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| 209 |
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* 32-Bit Address Resource
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* The base size of this byte stream is 26. If a Resource
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* Source string is not NULL, add 1 for the Index + the
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| 212 |
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* length of the null terminated string Resource Source +
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| 213 |
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* 1 for the null.
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| 214 |
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*/
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| 215 |
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segment_size = 26;
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| 217 |
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if (linked_list->data.address32.resource_source.string_ptr) {
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| 218 |
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segment_size += linked_list->data.address32.resource_source.string_length;
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| 219 |
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segment_size++;
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| 220 |
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}
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| 221 |
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break;
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| 222 |
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| 223 |
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case ACPI_RSTYPE_ADDRESS64:
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| 224 |
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/*
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| 225 |
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* 64-Bit Address Resource
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| 226 |
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* The base size of this byte stream is 46. If a Resource
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| 227 |
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* Source string is not NULL, add 1 for the Index + the
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| 228 |
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* length of the null terminated string Resource Source +
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| 229 |
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* 1 for the null.
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| 230 |
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*/
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| 231 |
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segment_size = 46;
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| 232 |
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| 233 |
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if (linked_list->data.address64.resource_source.string_ptr) {
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| 234 |
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segment_size += linked_list->data.address64.resource_source.string_length;
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| 235 |
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segment_size++;
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| 236 |
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}
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| 237 |
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break;
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| 238 |
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| 239 |
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case ACPI_RSTYPE_EXT_IRQ:
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| 240 |
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/*
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| 241 |
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* Extended IRQ Resource
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| 242 |
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* The base size of this byte stream is 9. This is for an
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| 243 |
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* Interrupt table length of 1. For each additional
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| 244 |
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* interrupt, add 4.
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| 245 |
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* If a Resource Source string is not NULL, add 1 for the
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| 246 |
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* Index + the length of the null terminated string
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| 247 |
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* Resource Source + 1 for the null.
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| 248 |
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*/
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| 249 |
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segment_size = 9 +
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| 250 |
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(((acpi_size) linked_list->data.extended_irq.number_of_interrupts - 1) * 4);
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| 251 |
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| 252 |
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if (ex_irq && ex_irq->resource_source.string_ptr) {
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| 253 |
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segment_size += linked_list->data.extended_irq.resource_source.string_length;
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| 254 |
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segment_size++;
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| 255 |
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}
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| 256 |
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break;
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| 257 |
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| 258 |
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default:
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| 259 |
|
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/*
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| 260 |
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* If we get here, everything is out of sync,
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| 261 |
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* so exit with an error
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| 262 |
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*/
|
| 263 |
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return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
|
| 264 |
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| 265 |
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} /* switch (linked_list->Id) */
|
| 266 |
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|
|
| 267 |
|
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/*
|
| 268 |
|
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* Update the total
|
| 269 |
|
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*/
|
| 270 |
|
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byte_stream_size_needed += segment_size;
|
| 271 |
|
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|
| 272 |
|
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/*
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| 273 |
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* Point to the next object
|
| 274 |
|
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*/
|
| 275 |
|
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linked_list = ACPI_PTR_ADD (struct acpi_resource,
|
| 276 |
|
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linked_list, linked_list->length);
|
| 277 |
|
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}
|
| 278 |
|
|
|
| 279 |
|
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/*
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| 280 |
|
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* This is the data the caller needs
|
| 281 |
|
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*/
|
| 282 |
|
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*size_needed = byte_stream_size_needed;
|
| 283 |
|
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return_ACPI_STATUS (AE_OK);
|
| 284 |
|
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}
|
| 285 |
|
|
|
| 286 |
|
|
|
| 287 |
|
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/*******************************************************************************
|
| 288 |
|
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*
|
| 289 |
|
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* FUNCTION: acpi_rs_get_list_length
|
| 290 |
|
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*
|
| 291 |
|
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* PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream
|
| 292 |
|
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* byte_stream_buffer_length - Size of byte_stream_buffer
|
| 293 |
|
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* size_needed - u32 pointer of the size buffer
|
| 294 |
|
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* needed to properly return the
|
| 295 |
|
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* parsed data
|
| 296 |
|
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*
|
| 297 |
|
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* RETURN: Status
|
| 298 |
|
|
*
|
| 299 |
|
|
* DESCRIPTION: Takes the resource byte stream and parses it once, calculating
|
| 300 |
|
|
* the size buffer needed to hold the linked list that conveys
|
| 301 |
|
|
* the resource data.
|
| 302 |
|
|
*
|
| 303 |
|
|
******************************************************************************/
|
| 304 |
|
|
|
| 305 |
|
|
acpi_status
|
| 306 |
|
|
acpi_rs_get_list_length (
|
| 307 |
|
|
u8 *byte_stream_buffer,
|
| 308 |
|
|
u32 byte_stream_buffer_length,
|
| 309 |
|
|
acpi_size *size_needed)
|
| 310 |
|
|
{
|
| 311 |
|
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u32 buffer_size = 0;
|
| 312 |
|
|
u32 bytes_parsed = 0;
|
| 313 |
|
|
u8 number_of_interrupts = 0;
|
| 314 |
|
|
u8 number_of_channels = 0;
|
| 315 |
|
|
u8 resource_type;
|
| 316 |
|
|
u32 structure_size;
|
| 317 |
|
|
u32 bytes_consumed;
|
| 318 |
|
|
u8 *buffer;
|
| 319 |
|
|
u8 temp8;
|
| 320 |
|
|
u16 temp16;
|
| 321 |
|
|
u8 index;
|
| 322 |
|
|
u8 additional_bytes;
|
| 323 |
|
|
|
| 324 |
|
|
|
| 325 |
|
|
ACPI_FUNCTION_TRACE ("rs_get_list_length");
|
| 326 |
|
|
|
| 327 |
|
|
|
| 328 |
|
|
while (bytes_parsed < byte_stream_buffer_length) {
|
| 329 |
|
|
/*
|
| 330 |
|
|
* The next byte in the stream is the resource type
|
| 331 |
|
|
*/
|
| 332 |
|
|
resource_type = acpi_rs_get_resource_type (*byte_stream_buffer);
|
| 333 |
|
|
|
| 334 |
|
|
switch (resource_type) {
|
| 335 |
|
|
case ACPI_RDESC_TYPE_MEMORY_24:
|
| 336 |
|
|
/*
|
| 337 |
|
|
* 24-Bit Memory Resource
|
| 338 |
|
|
*/
|
| 339 |
|
|
bytes_consumed = 12;
|
| 340 |
|
|
|
| 341 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem24);
|
| 342 |
|
|
break;
|
| 343 |
|
|
|
| 344 |
|
|
|
| 345 |
|
|
case ACPI_RDESC_TYPE_LARGE_VENDOR:
|
| 346 |
|
|
/*
|
| 347 |
|
|
* Vendor Defined Resource
|
| 348 |
|
|
*/
|
| 349 |
|
|
buffer = byte_stream_buffer;
|
| 350 |
|
|
++buffer;
|
| 351 |
|
|
|
| 352 |
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
| 353 |
|
|
bytes_consumed = temp16 + 3;
|
| 354 |
|
|
|
| 355 |
|
|
/*
|
| 356 |
|
|
* Ensure a 32-bit boundary for the structure
|
| 357 |
|
|
*/
|
| 358 |
|
|
temp16 = (u16) ACPI_ROUND_UP_to_32_bITS (temp16);
|
| 359 |
|
|
|
| 360 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor) +
|
| 361 |
|
|
(temp16 * sizeof (u8));
|
| 362 |
|
|
break;
|
| 363 |
|
|
|
| 364 |
|
|
|
| 365 |
|
|
case ACPI_RDESC_TYPE_MEMORY_32:
|
| 366 |
|
|
/*
|
| 367 |
|
|
* 32-Bit Memory Range Resource
|
| 368 |
|
|
*/
|
| 369 |
|
|
|
| 370 |
|
|
bytes_consumed = 20;
|
| 371 |
|
|
|
| 372 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem32);
|
| 373 |
|
|
break;
|
| 374 |
|
|
|
| 375 |
|
|
|
| 376 |
|
|
case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
|
| 377 |
|
|
/*
|
| 378 |
|
|
* 32-Bit Fixed Memory Resource
|
| 379 |
|
|
*/
|
| 380 |
|
|
bytes_consumed = 12;
|
| 381 |
|
|
|
| 382 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_mem32);
|
| 383 |
|
|
break;
|
| 384 |
|
|
|
| 385 |
|
|
|
| 386 |
|
|
case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
|
| 387 |
|
|
/*
|
| 388 |
|
|
* 64-Bit Address Resource
|
| 389 |
|
|
*/
|
| 390 |
|
|
buffer = byte_stream_buffer;
|
| 391 |
|
|
|
| 392 |
|
|
++buffer;
|
| 393 |
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
| 394 |
|
|
|
| 395 |
|
|
bytes_consumed = temp16 + 3;
|
| 396 |
|
|
|
| 397 |
|
|
/*
|
| 398 |
|
|
* Resource Source Index and Resource Source are
|
| 399 |
|
|
* optional elements. Check the length of the
|
| 400 |
|
|
* Bytestream. If it is greater than 43, that
|
| 401 |
|
|
* means that an Index exists and is followed by
|
| 402 |
|
|
* a null termininated string. Therefore, set
|
| 403 |
|
|
* the temp variable to the length minus the minimum
|
| 404 |
|
|
* byte stream length plus the byte for the Index to
|
| 405 |
|
|
* determine the size of the NULL terminiated string.
|
| 406 |
|
|
*/
|
| 407 |
|
|
if (43 < temp16) {
|
| 408 |
|
|
temp8 = (u8) (temp16 - 44);
|
| 409 |
|
|
}
|
| 410 |
|
|
else {
|
| 411 |
|
|
temp8 = 0;
|
| 412 |
|
|
}
|
| 413 |
|
|
|
| 414 |
|
|
/*
|
| 415 |
|
|
* Ensure a 64-bit boundary for the structure
|
| 416 |
|
|
*/
|
| 417 |
|
|
temp8 = (u8) ACPI_ROUND_UP_to_64_bITS (temp8);
|
| 418 |
|
|
|
| 419 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64) +
|
| 420 |
|
|
(temp8 * sizeof (u8));
|
| 421 |
|
|
break;
|
| 422 |
|
|
|
| 423 |
|
|
|
| 424 |
|
|
case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
|
| 425 |
|
|
/*
|
| 426 |
|
|
* 32-Bit Address Resource
|
| 427 |
|
|
*/
|
| 428 |
|
|
buffer = byte_stream_buffer;
|
| 429 |
|
|
|
| 430 |
|
|
++buffer;
|
| 431 |
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
| 432 |
|
|
|
| 433 |
|
|
bytes_consumed = temp16 + 3;
|
| 434 |
|
|
|
| 435 |
|
|
/*
|
| 436 |
|
|
* Resource Source Index and Resource Source are
|
| 437 |
|
|
* optional elements. Check the length of the
|
| 438 |
|
|
* Bytestream. If it is greater than 23, that
|
| 439 |
|
|
* means that an Index exists and is followed by
|
| 440 |
|
|
* a null termininated string. Therefore, set
|
| 441 |
|
|
* the temp variable to the length minus the minimum
|
| 442 |
|
|
* byte stream length plus the byte for the Index to
|
| 443 |
|
|
* determine the size of the NULL terminiated string.
|
| 444 |
|
|
*/
|
| 445 |
|
|
if (23 < temp16) {
|
| 446 |
|
|
temp8 = (u8) (temp16 - 24);
|
| 447 |
|
|
}
|
| 448 |
|
|
else {
|
| 449 |
|
|
temp8 = 0;
|
| 450 |
|
|
}
|
| 451 |
|
|
|
| 452 |
|
|
/*
|
| 453 |
|
|
* Ensure a 32-bit boundary for the structure
|
| 454 |
|
|
*/
|
| 455 |
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
| 456 |
|
|
|
| 457 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address32) +
|
| 458 |
|
|
(temp8 * sizeof (u8));
|
| 459 |
|
|
break;
|
| 460 |
|
|
|
| 461 |
|
|
|
| 462 |
|
|
case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
|
| 463 |
|
|
/*
|
| 464 |
|
|
* 16-Bit Address Resource
|
| 465 |
|
|
*/
|
| 466 |
|
|
buffer = byte_stream_buffer;
|
| 467 |
|
|
|
| 468 |
|
|
++buffer;
|
| 469 |
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
| 470 |
|
|
|
| 471 |
|
|
bytes_consumed = temp16 + 3;
|
| 472 |
|
|
|
| 473 |
|
|
/*
|
| 474 |
|
|
* Resource Source Index and Resource Source are
|
| 475 |
|
|
* optional elements. Check the length of the
|
| 476 |
|
|
* Bytestream. If it is greater than 13, that
|
| 477 |
|
|
* means that an Index exists and is followed by
|
| 478 |
|
|
* a null termininated string. Therefore, set
|
| 479 |
|
|
* the temp variable to the length minus the minimum
|
| 480 |
|
|
* byte stream length plus the byte for the Index to
|
| 481 |
|
|
* determine the size of the NULL terminiated string.
|
| 482 |
|
|
*/
|
| 483 |
|
|
if (13 < temp16) {
|
| 484 |
|
|
temp8 = (u8) (temp16 - 14);
|
| 485 |
|
|
}
|
| 486 |
|
|
else {
|
| 487 |
|
|
temp8 = 0;
|
| 488 |
|
|
}
|
| 489 |
|
|
|
| 490 |
|
|
/*
|
| 491 |
|
|
* Ensure a 32-bit boundary for the structure
|
| 492 |
|
|
*/
|
| 493 |
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
| 494 |
|
|
|
| 495 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address16) +
|
| 496 |
|
|
(temp8 * sizeof (u8));
|
| 497 |
|
|
break;
|
| 498 |
|
|
|
| 499 |
|
|
|
| 500 |
|
|
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
|
| 501 |
|
|
/*
|
| 502 |
|
|
* Extended IRQ
|
| 503 |
|
|
*/
|
| 504 |
|
|
buffer = byte_stream_buffer;
|
| 505 |
|
|
|
| 506 |
|
|
++buffer;
|
| 507 |
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
| 508 |
|
|
|
| 509 |
|
|
bytes_consumed = temp16 + 3;
|
| 510 |
|
|
|
| 511 |
|
|
/*
|
| 512 |
|
|
* Point past the length field and the
|
| 513 |
|
|
* Interrupt vector flags to save off the
|
| 514 |
|
|
* Interrupt table length to the Temp8 variable.
|
| 515 |
|
|
*/
|
| 516 |
|
|
buffer += 3;
|
| 517 |
|
|
temp8 = *buffer;
|
| 518 |
|
|
|
| 519 |
|
|
/*
|
| 520 |
|
|
* To compensate for multiple interrupt numbers, add 4 bytes for
|
| 521 |
|
|
* each additional interrupts greater than 1
|
| 522 |
|
|
*/
|
| 523 |
|
|
additional_bytes = (u8) ((temp8 - 1) * 4);
|
| 524 |
|
|
|
| 525 |
|
|
/*
|
| 526 |
|
|
* Resource Source Index and Resource Source are
|
| 527 |
|
|
* optional elements. Check the length of the
|
| 528 |
|
|
* Bytestream. If it is greater than 9, that
|
| 529 |
|
|
* means that an Index exists and is followed by
|
| 530 |
|
|
* a null termininated string. Therefore, set
|
| 531 |
|
|
* the temp variable to the length minus the minimum
|
| 532 |
|
|
* byte stream length plus the byte for the Index to
|
| 533 |
|
|
* determine the size of the NULL terminiated string.
|
| 534 |
|
|
*/
|
| 535 |
|
|
if (9 + additional_bytes < temp16) {
|
| 536 |
|
|
temp8 = (u8) (temp16 - (9 + additional_bytes));
|
| 537 |
|
|
}
|
| 538 |
|
|
else {
|
| 539 |
|
|
temp8 = 0;
|
| 540 |
|
|
}
|
| 541 |
|
|
|
| 542 |
|
|
/*
|
| 543 |
|
|
* Ensure a 32-bit boundary for the structure
|
| 544 |
|
|
*/
|
| 545 |
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
| 546 |
|
|
|
| 547 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_ext_irq) +
|
| 548 |
|
|
(additional_bytes * sizeof (u8)) +
|
| 549 |
|
|
(temp8 * sizeof (u8));
|
| 550 |
|
|
break;
|
| 551 |
|
|
|
| 552 |
|
|
|
| 553 |
|
|
case ACPI_RDESC_TYPE_IRQ_FORMAT:
|
| 554 |
|
|
/*
|
| 555 |
|
|
* IRQ Resource.
|
| 556 |
|
|
* Determine if it there are two or three trailing bytes
|
| 557 |
|
|
*/
|
| 558 |
|
|
buffer = byte_stream_buffer;
|
| 559 |
|
|
temp8 = *buffer;
|
| 560 |
|
|
|
| 561 |
|
|
if(temp8 & 0x01) {
|
| 562 |
|
|
bytes_consumed = 4;
|
| 563 |
|
|
}
|
| 564 |
|
|
else {
|
| 565 |
|
|
bytes_consumed = 3;
|
| 566 |
|
|
}
|
| 567 |
|
|
|
| 568 |
|
|
/*
|
| 569 |
|
|
* Point past the descriptor
|
| 570 |
|
|
*/
|
| 571 |
|
|
++buffer;
|
| 572 |
|
|
|
| 573 |
|
|
/*
|
| 574 |
|
|
* Look at the number of bits set
|
| 575 |
|
|
*/
|
| 576 |
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
| 577 |
|
|
|
| 578 |
|
|
for (index = 0; index < 16; index++) {
|
| 579 |
|
|
if (temp16 & 0x1) {
|
| 580 |
|
|
++number_of_interrupts;
|
| 581 |
|
|
}
|
| 582 |
|
|
|
| 583 |
|
|
temp16 >>= 1;
|
| 584 |
|
|
}
|
| 585 |
|
|
|
| 586 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io) +
|
| 587 |
|
|
(number_of_interrupts * sizeof (u32));
|
| 588 |
|
|
break;
|
| 589 |
|
|
|
| 590 |
|
|
|
| 591 |
|
|
case ACPI_RDESC_TYPE_DMA_FORMAT:
|
| 592 |
|
|
/*
|
| 593 |
|
|
* DMA Resource
|
| 594 |
|
|
*/
|
| 595 |
|
|
buffer = byte_stream_buffer;
|
| 596 |
|
|
bytes_consumed = 3;
|
| 597 |
|
|
|
| 598 |
|
|
/*
|
| 599 |
|
|
* Point past the descriptor
|
| 600 |
|
|
*/
|
| 601 |
|
|
++buffer;
|
| 602 |
|
|
|
| 603 |
|
|
/*
|
| 604 |
|
|
* Look at the number of bits set
|
| 605 |
|
|
*/
|
| 606 |
|
|
temp8 = *buffer;
|
| 607 |
|
|
|
| 608 |
|
|
for(index = 0; index < 8; index++) {
|
| 609 |
|
|
if(temp8 & 0x1) {
|
| 610 |
|
|
++number_of_channels;
|
| 611 |
|
|
}
|
| 612 |
|
|
|
| 613 |
|
|
temp8 >>= 1;
|
| 614 |
|
|
}
|
| 615 |
|
|
|
| 616 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_dma) +
|
| 617 |
|
|
(number_of_channels * sizeof (u32));
|
| 618 |
|
|
break;
|
| 619 |
|
|
|
| 620 |
|
|
|
| 621 |
|
|
case ACPI_RDESC_TYPE_START_DEPENDENT:
|
| 622 |
|
|
/*
|
| 623 |
|
|
* Start Dependent Functions Resource
|
| 624 |
|
|
* Determine if it there are two or three trailing bytes
|
| 625 |
|
|
*/
|
| 626 |
|
|
buffer = byte_stream_buffer;
|
| 627 |
|
|
temp8 = *buffer;
|
| 628 |
|
|
|
| 629 |
|
|
if(temp8 & 0x01) {
|
| 630 |
|
|
bytes_consumed = 2;
|
| 631 |
|
|
}
|
| 632 |
|
|
else {
|
| 633 |
|
|
bytes_consumed = 1;
|
| 634 |
|
|
}
|
| 635 |
|
|
|
| 636 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_start_dpf);
|
| 637 |
|
|
break;
|
| 638 |
|
|
|
| 639 |
|
|
|
| 640 |
|
|
case ACPI_RDESC_TYPE_END_DEPENDENT:
|
| 641 |
|
|
/*
|
| 642 |
|
|
* End Dependent Functions Resource
|
| 643 |
|
|
*/
|
| 644 |
|
|
bytes_consumed = 1;
|
| 645 |
|
|
structure_size = ACPI_RESOURCE_LENGTH;
|
| 646 |
|
|
break;
|
| 647 |
|
|
|
| 648 |
|
|
|
| 649 |
|
|
case ACPI_RDESC_TYPE_IO_PORT:
|
| 650 |
|
|
/*
|
| 651 |
|
|
* IO Port Resource
|
| 652 |
|
|
*/
|
| 653 |
|
|
bytes_consumed = 8;
|
| 654 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_io);
|
| 655 |
|
|
break;
|
| 656 |
|
|
|
| 657 |
|
|
|
| 658 |
|
|
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
|
| 659 |
|
|
/*
|
| 660 |
|
|
* Fixed IO Port Resource
|
| 661 |
|
|
*/
|
| 662 |
|
|
bytes_consumed = 4;
|
| 663 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_io);
|
| 664 |
|
|
break;
|
| 665 |
|
|
|
| 666 |
|
|
|
| 667 |
|
|
case ACPI_RDESC_TYPE_SMALL_VENDOR:
|
| 668 |
|
|
/*
|
| 669 |
|
|
* Vendor Specific Resource
|
| 670 |
|
|
*/
|
| 671 |
|
|
buffer = byte_stream_buffer;
|
| 672 |
|
|
|
| 673 |
|
|
temp8 = *buffer;
|
| 674 |
|
|
temp8 = (u8) (temp8 & 0x7);
|
| 675 |
|
|
bytes_consumed = temp8 + 1;
|
| 676 |
|
|
|
| 677 |
|
|
/*
|
| 678 |
|
|
* Ensure a 32-bit boundary for the structure
|
| 679 |
|
|
*/
|
| 680 |
|
|
temp8 = (u8) ACPI_ROUND_UP_to_32_bITS (temp8);
|
| 681 |
|
|
structure_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_vendor) +
|
| 682 |
|
|
(temp8 * sizeof (u8));
|
| 683 |
|
|
break;
|
| 684 |
|
|
|
| 685 |
|
|
|
| 686 |
|
|
case ACPI_RDESC_TYPE_END_TAG:
|
| 687 |
|
|
/*
|
| 688 |
|
|
* End Tag
|
| 689 |
|
|
*/
|
| 690 |
|
|
bytes_consumed = 2;
|
| 691 |
|
|
structure_size = ACPI_RESOURCE_LENGTH;
|
| 692 |
|
|
byte_stream_buffer_length = bytes_parsed;
|
| 693 |
|
|
break;
|
| 694 |
|
|
|
| 695 |
|
|
|
| 696 |
|
|
default:
|
| 697 |
|
|
/*
|
| 698 |
|
|
* If we get here, everything is out of sync,
|
| 699 |
|
|
* exit with an error
|
| 700 |
|
|
*/
|
| 701 |
|
|
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
|
| 702 |
|
|
}
|
| 703 |
|
|
|
| 704 |
|
|
/*
|
| 705 |
|
|
* Update the return value and counter
|
| 706 |
|
|
*/
|
| 707 |
|
|
buffer_size += (u32) ACPI_ALIGN_RESOURCE_SIZE (structure_size);
|
| 708 |
|
|
bytes_parsed += bytes_consumed;
|
| 709 |
|
|
|
| 710 |
|
|
/*
|
| 711 |
|
|
* Set the byte stream to point to the next resource
|
| 712 |
|
|
*/
|
| 713 |
|
|
byte_stream_buffer += bytes_consumed;
|
| 714 |
|
|
}
|
| 715 |
|
|
|
| 716 |
|
|
/*
|
| 717 |
|
|
* This is the data the caller needs
|
| 718 |
|
|
*/
|
| 719 |
|
|
*size_needed = buffer_size;
|
| 720 |
|
|
return_ACPI_STATUS (AE_OK);
|
| 721 |
|
|
}
|
| 722 |
|
|
|
| 723 |
|
|
|
| 724 |
|
|
/*******************************************************************************
|
| 725 |
|
|
*
|
| 726 |
|
|
* FUNCTION: acpi_rs_get_pci_routing_table_length
|
| 727 |
|
|
*
|
| 728 |
|
|
* PARAMETERS: package_object - Pointer to the package object
|
| 729 |
|
|
* buffer_size_needed - u32 pointer of the size buffer
|
| 730 |
|
|
* needed to properly return the
|
| 731 |
|
|
* parsed data
|
| 732 |
|
|
*
|
| 733 |
|
|
* RETURN: Status
|
| 734 |
|
|
*
|
| 735 |
|
|
* DESCRIPTION: Given a package representing a PCI routing table, this
|
| 736 |
|
|
* calculates the size of the corresponding linked list of
|
| 737 |
|
|
* descriptions.
|
| 738 |
|
|
*
|
| 739 |
|
|
******************************************************************************/
|
| 740 |
|
|
|
| 741 |
|
|
acpi_status
|
| 742 |
|
|
acpi_rs_get_pci_routing_table_length (
|
| 743 |
|
|
union acpi_operand_object *package_object,
|
| 744 |
|
|
acpi_size *buffer_size_needed)
|
| 745 |
|
|
{
|
| 746 |
|
|
u32 number_of_elements;
|
| 747 |
|
|
acpi_size temp_size_needed = 0;
|
| 748 |
|
|
union acpi_operand_object **top_object_list;
|
| 749 |
|
|
u32 index;
|
| 750 |
|
|
union acpi_operand_object *package_element;
|
| 751 |
|
|
union acpi_operand_object **sub_object_list;
|
| 752 |
|
|
u8 name_found;
|
| 753 |
|
|
u32 table_index;
|
| 754 |
|
|
|
| 755 |
|
|
|
| 756 |
|
|
ACPI_FUNCTION_TRACE ("rs_get_pci_routing_table_length");
|
| 757 |
|
|
|
| 758 |
|
|
|
| 759 |
|
|
number_of_elements = package_object->package.count;
|
| 760 |
|
|
|
| 761 |
|
|
/*
|
| 762 |
|
|
* Calculate the size of the return buffer.
|
| 763 |
|
|
* The base size is the number of elements * the sizes of the
|
| 764 |
|
|
* structures. Additional space for the strings is added below.
|
| 765 |
|
|
* The minus one is to subtract the size of the u8 Source[1]
|
| 766 |
|
|
* member because it is added below.
|
| 767 |
|
|
*
|
| 768 |
|
|
* But each PRT_ENTRY structure has a pointer to a string and
|
| 769 |
|
|
* the size of that string must be found.
|
| 770 |
|
|
*/
|
| 771 |
|
|
top_object_list = package_object->package.elements;
|
| 772 |
|
|
|
| 773 |
|
|
for (index = 0; index < number_of_elements; index++) {
|
| 774 |
|
|
/*
|
| 775 |
|
|
* Dereference the sub-package
|
| 776 |
|
|
*/
|
| 777 |
|
|
package_element = *top_object_list;
|
| 778 |
|
|
|
| 779 |
|
|
/*
|
| 780 |
|
|
* The sub_object_list will now point to an array of the
|
| 781 |
|
|
* four IRQ elements: Address, Pin, Source and source_index
|
| 782 |
|
|
*/
|
| 783 |
|
|
sub_object_list = package_element->package.elements;
|
| 784 |
|
|
|
| 785 |
|
|
/*
|
| 786 |
|
|
* Scan the irq_table_elements for the Source Name String
|
| 787 |
|
|
*/
|
| 788 |
|
|
name_found = FALSE;
|
| 789 |
|
|
|
| 790 |
|
|
for (table_index = 0; table_index < 4 && !name_found; table_index++) {
|
| 791 |
|
|
if ((ACPI_TYPE_STRING == ACPI_GET_OBJECT_TYPE (*sub_object_list)) ||
|
| 792 |
|
|
((ACPI_TYPE_LOCAL_REFERENCE == ACPI_GET_OBJECT_TYPE (*sub_object_list)) &&
|
| 793 |
|
|
((*sub_object_list)->reference.opcode == AML_INT_NAMEPATH_OP))) {
|
| 794 |
|
|
name_found = TRUE;
|
| 795 |
|
|
}
|
| 796 |
|
|
else {
|
| 797 |
|
|
/*
|
| 798 |
|
|
* Look at the next element
|
| 799 |
|
|
*/
|
| 800 |
|
|
sub_object_list++;
|
| 801 |
|
|
}
|
| 802 |
|
|
}
|
| 803 |
|
|
|
| 804 |
|
|
temp_size_needed += (sizeof (struct acpi_pci_routing_table) - 4);
|
| 805 |
|
|
|
| 806 |
|
|
/*
|
| 807 |
|
|
* Was a String type found?
|
| 808 |
|
|
*/
|
| 809 |
|
|
if (name_found) {
|
| 810 |
|
|
if (ACPI_GET_OBJECT_TYPE (*sub_object_list) == ACPI_TYPE_STRING) {
|
| 811 |
|
|
/*
|
| 812 |
|
|
* The length String.Length field does not include the
|
| 813 |
|
|
* terminating NULL, add 1
|
| 814 |
|
|
*/
|
| 815 |
|
|
temp_size_needed += ((acpi_size) (*sub_object_list)->string.length + 1);
|
| 816 |
|
|
}
|
| 817 |
|
|
else {
|
| 818 |
|
|
temp_size_needed += acpi_ns_get_pathname_length (
|
| 819 |
|
|
(*sub_object_list)->reference.node);
|
| 820 |
|
|
}
|
| 821 |
|
|
}
|
| 822 |
|
|
else {
|
| 823 |
|
|
/*
|
| 824 |
|
|
* If no name was found, then this is a NULL, which is
|
| 825 |
|
|
* translated as a u32 zero.
|
| 826 |
|
|
*/
|
| 827 |
|
|
temp_size_needed += sizeof (u32);
|
| 828 |
|
|
}
|
| 829 |
|
|
|
| 830 |
|
|
/* Round up the size since each element must be aligned */
|
| 831 |
|
|
|
| 832 |
|
|
temp_size_needed = ACPI_ROUND_UP_to_64_bITS (temp_size_needed);
|
| 833 |
|
|
|
| 834 |
|
|
/*
|
| 835 |
|
|
* Point to the next union acpi_operand_object
|
| 836 |
|
|
*/
|
| 837 |
|
|
top_object_list++;
|
| 838 |
|
|
}
|
| 839 |
|
|
|
| 840 |
|
|
/*
|
| 841 |
|
|
* Adding an extra element to the end of the list, essentially a NULL terminator
|
| 842 |
|
|
*/
|
| 843 |
|
|
*buffer_size_needed = temp_size_needed + sizeof (struct acpi_pci_routing_table);
|
| 844 |
|
|
return_ACPI_STATUS (AE_OK);
|
| 845 |
|
|
}
|
