1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
519 lines
13 KiB
C
519 lines
13 KiB
C
/*******************************************************************************
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*
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* Module Name: rslist - Linked list utilities
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000 - 2005, 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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#define _COMPONENT ACPI_RESOURCES
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ACPI_MODULE_NAME ("rslist")
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_get_resource_type
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*
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* PARAMETERS: resource_start_byte - Byte 0 of a resource descriptor
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*
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* RETURN: The Resource Type (Name) with no extraneous bits
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*
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* DESCRIPTION: Extract the Resource Type/Name from the first byte of
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* a resource descriptor.
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*
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******************************************************************************/
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u8
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acpi_rs_get_resource_type (
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u8 resource_start_byte)
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{
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ACPI_FUNCTION_ENTRY ();
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/*
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* Determine if this is a small or large resource
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*/
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switch (resource_start_byte & ACPI_RDESC_TYPE_MASK) {
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case ACPI_RDESC_TYPE_SMALL:
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/*
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* Small Resource Type -- Only bits 6:3 are valid
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*/
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return ((u8) (resource_start_byte & ACPI_RDESC_SMALL_MASK));
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case ACPI_RDESC_TYPE_LARGE:
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/*
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* Large Resource Type -- All bits are valid
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*/
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return (resource_start_byte);
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default:
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/* No other types of resource descriptor */
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break;
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}
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return (0xFF);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_byte_stream_to_list
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*
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* PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream
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* byte_stream_buffer_length - Length of byte_stream_buffer
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* output_buffer - Pointer to the buffer that will
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* contain the output structures
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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, creating a
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* linked list of resources in the caller's output buffer
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*
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******************************************************************************/
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acpi_status
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acpi_rs_byte_stream_to_list (
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u8 *byte_stream_buffer,
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u32 byte_stream_buffer_length,
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u8 *output_buffer)
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{
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acpi_status status;
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acpi_size bytes_parsed = 0;
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u8 resource_type = 0;
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acpi_size bytes_consumed = 0;
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u8 *buffer = output_buffer;
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acpi_size structure_size = 0;
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u8 end_tag_processed = FALSE;
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struct acpi_resource *resource;
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ACPI_FUNCTION_TRACE ("rs_byte_stream_to_list");
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while (bytes_parsed < byte_stream_buffer_length &&
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!end_tag_processed) {
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/*
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* The next byte in the stream is the resource type
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*/
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resource_type = acpi_rs_get_resource_type (*byte_stream_buffer);
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switch (resource_type) {
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case ACPI_RDESC_TYPE_MEMORY_24:
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/*
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* 24-Bit Memory Resource
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*/
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status = acpi_rs_memory24_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_LARGE_VENDOR:
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/*
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* Vendor Defined Resource
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*/
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status = acpi_rs_vendor_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_MEMORY_32:
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/*
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* 32-Bit Memory Range Resource
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*/
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status = acpi_rs_memory32_range_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
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/*
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* 32-Bit Fixed Memory Resource
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*/
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status = acpi_rs_fixed_memory32_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
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case ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE:
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/*
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* 64-Bit Address Resource
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*/
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status = acpi_rs_address64_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
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/*
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* 32-Bit Address Resource
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*/
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status = acpi_rs_address32_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
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/*
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* 16-Bit Address Resource
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*/
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status = acpi_rs_address16_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
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/*
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* Extended IRQ
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*/
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status = acpi_rs_extended_irq_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_IRQ_FORMAT:
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/*
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* IRQ Resource
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*/
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status = acpi_rs_irq_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_DMA_FORMAT:
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/*
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* DMA Resource
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*/
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status = acpi_rs_dma_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_START_DEPENDENT:
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/*
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* Start Dependent Functions Resource
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*/
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status = acpi_rs_start_depend_fns_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_END_DEPENDENT:
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/*
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* End Dependent Functions Resource
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*/
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status = acpi_rs_end_depend_fns_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_IO_PORT:
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/*
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* IO Port Resource
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*/
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status = acpi_rs_io_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_FIXED_IO_PORT:
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/*
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* Fixed IO Port Resource
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*/
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status = acpi_rs_fixed_io_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_SMALL_VENDOR:
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/*
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* Vendor Specific Resource
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*/
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status = acpi_rs_vendor_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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case ACPI_RDESC_TYPE_END_TAG:
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/*
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* End Tag
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*/
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end_tag_processed = TRUE;
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status = acpi_rs_end_tag_resource (byte_stream_buffer,
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&bytes_consumed, &buffer, &structure_size);
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break;
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default:
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/*
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* Invalid/Unknown resource type
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*/
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status = AE_AML_INVALID_RESOURCE_TYPE;
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break;
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}
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/*
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* Update the return value and counter
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*/
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bytes_parsed += bytes_consumed;
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/*
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* Set the byte stream to point to the next resource
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*/
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byte_stream_buffer += bytes_consumed;
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/*
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* Set the Buffer to the next structure
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*/
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resource = ACPI_CAST_PTR (struct acpi_resource, buffer);
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resource->length = (u32) ACPI_ALIGN_RESOURCE_SIZE (resource->length);
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buffer += ACPI_ALIGN_RESOURCE_SIZE (structure_size);
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} /* end while */
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/*
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* Check the reason for exiting the while loop
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*/
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if (!end_tag_processed) {
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return_ACPI_STATUS (AE_AML_NO_RESOURCE_END_TAG);
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_list_to_byte_stream
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*
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* PARAMETERS: linked_list - Pointer to the resource linked list
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* byte_steam_size_needed - Calculated size of the byte stream
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* needed from calling
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* acpi_rs_get_byte_stream_length()
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* The size of the output_buffer is
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* guaranteed to be >=
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* byte_stream_size_needed
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* output_buffer - Pointer to the buffer that will
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* contain the byte stream
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*
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* RETURN: Status
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*
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* DESCRIPTION: Takes the resource linked list and parses it, creating a
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* byte stream of resources in the caller's output buffer
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*
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******************************************************************************/
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acpi_status
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acpi_rs_list_to_byte_stream (
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struct acpi_resource *linked_list,
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acpi_size byte_stream_size_needed,
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u8 *output_buffer)
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{
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acpi_status status;
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u8 *buffer = output_buffer;
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acpi_size bytes_consumed = 0;
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u8 done = FALSE;
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ACPI_FUNCTION_TRACE ("rs_list_to_byte_stream");
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while (!done) {
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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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*/
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status = acpi_rs_irq_stream (linked_list, &buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_dma_stream (linked_list, &buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_start_depend_fns_stream (linked_list,
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&buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_end_depend_fns_stream (linked_list,
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&buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_io_stream (linked_list, &buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_fixed_io_stream (linked_list, &buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_vendor_stream (linked_list, &buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_end_tag_stream (linked_list, &buffer, &bytes_consumed);
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/*
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* An End Tag indicates the end of the Resource Template
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*/
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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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*/
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status = acpi_rs_memory24_stream (linked_list, &buffer, &bytes_consumed);
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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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*/
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status = acpi_rs_memory32_range_stream (linked_list, &buffer,
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&bytes_consumed);
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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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*/
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status = acpi_rs_fixed_memory32_stream (linked_list, &buffer,
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&bytes_consumed);
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break;
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case ACPI_RSTYPE_ADDRESS16:
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/*
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* 16-Bit Address Descriptor Resource
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*/
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status = acpi_rs_address16_stream (linked_list, &buffer,
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&bytes_consumed);
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break;
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case ACPI_RSTYPE_ADDRESS32:
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/*
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* 32-Bit Address Descriptor Resource
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*/
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status = acpi_rs_address32_stream (linked_list, &buffer,
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&bytes_consumed);
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break;
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case ACPI_RSTYPE_ADDRESS64:
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/*
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* 64-Bit Address Descriptor Resource
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*/
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status = acpi_rs_address64_stream (linked_list, &buffer,
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&bytes_consumed);
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break;
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case ACPI_RSTYPE_EXT_IRQ:
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/*
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* Extended IRQ Resource
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*/
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status = acpi_rs_extended_irq_stream (linked_list, &buffer,
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&bytes_consumed);
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break;
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default:
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/*
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* If we get here, everything is out of sync,
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* so exit with an error
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid descriptor type (%X) in resource list\n",
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linked_list->id));
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status = AE_BAD_DATA;
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break;
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} /* switch (linked_list->Id) */
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if (ACPI_FAILURE (status)) {
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return_ACPI_STATUS (status);
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}
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/*
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* Set the Buffer to point to the open byte
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*/
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buffer += bytes_consumed;
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/*
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* Point to the next object
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*/
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linked_list = ACPI_PTR_ADD (struct acpi_resource,
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linked_list, linked_list->length);
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}
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return_ACPI_STATUS (AE_OK);
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}
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