mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 05:11:48 +00:00
526 lines
13 KiB
C
526 lines
13 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: rslist - Linked list utilities
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2005, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/acresrc.h>
|
|
|
|
#define _COMPONENT ACPI_RESOURCES
|
|
ACPI_MODULE_NAME("rslist")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_get_resource_type
|
|
*
|
|
* PARAMETERS: resource_start_byte - Byte 0 of a resource descriptor
|
|
*
|
|
* RETURN: The Resource Type with no extraneous bits
|
|
*
|
|
* DESCRIPTION: Extract the Resource Type/Name from the first byte of
|
|
* a resource descriptor.
|
|
*
|
|
******************************************************************************/
|
|
u8 acpi_rs_get_resource_type(u8 resource_start_byte)
|
|
{
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/* Determine if this is a small or large resource */
|
|
|
|
switch (resource_start_byte & ACPI_RDESC_TYPE_MASK) {
|
|
case ACPI_RDESC_TYPE_SMALL:
|
|
|
|
/* Small Resource Type -- Only bits 6:3 are valid */
|
|
|
|
return ((u8) (resource_start_byte & ACPI_RDESC_SMALL_MASK));
|
|
|
|
case ACPI_RDESC_TYPE_LARGE:
|
|
|
|
/* Large Resource Type -- All bits are valid */
|
|
|
|
return (resource_start_byte);
|
|
|
|
default:
|
|
/* Invalid type */
|
|
break;
|
|
}
|
|
|
|
return (0xFF);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_byte_stream_to_list
|
|
*
|
|
* PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream
|
|
* byte_stream_buffer_length - Length of byte_stream_buffer
|
|
* output_buffer - Pointer to the buffer that will
|
|
* contain the output structures
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Takes the resource byte stream and parses it, creating a
|
|
* linked list of resources in the caller's output buffer
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_rs_byte_stream_to_list(u8 * byte_stream_buffer,
|
|
u32 byte_stream_buffer_length, u8 * output_buffer)
|
|
{
|
|
acpi_status status;
|
|
acpi_size bytes_parsed = 0;
|
|
u8 resource_type = 0;
|
|
acpi_size bytes_consumed = 0;
|
|
u8 *buffer = output_buffer;
|
|
acpi_size structure_size = 0;
|
|
u8 end_tag_processed = FALSE;
|
|
struct acpi_resource *resource;
|
|
|
|
ACPI_FUNCTION_TRACE("rs_byte_stream_to_list");
|
|
|
|
while (bytes_parsed < byte_stream_buffer_length && !end_tag_processed) {
|
|
/* The next byte in the stream is the resource type */
|
|
|
|
resource_type = acpi_rs_get_resource_type(*byte_stream_buffer);
|
|
|
|
switch (resource_type) {
|
|
case ACPI_RDESC_TYPE_MEMORY_24:
|
|
/*
|
|
* 24-Bit Memory Resource
|
|
*/
|
|
status = acpi_rs_memory24_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_LARGE_VENDOR:
|
|
/*
|
|
* Vendor Defined Resource
|
|
*/
|
|
status = acpi_rs_vendor_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_MEMORY_32:
|
|
/*
|
|
* 32-Bit Memory Range Resource
|
|
*/
|
|
status =
|
|
acpi_rs_memory32_range_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_FIXED_MEMORY_32:
|
|
/*
|
|
* 32-Bit Fixed Memory Resource
|
|
*/
|
|
status =
|
|
acpi_rs_fixed_memory32_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE:
|
|
case ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE:
|
|
/*
|
|
* 64-Bit Address Resource
|
|
*/
|
|
status = acpi_rs_address64_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE:
|
|
/*
|
|
* 32-Bit Address Resource
|
|
*/
|
|
status = acpi_rs_address32_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE:
|
|
/*
|
|
* 16-Bit Address Resource
|
|
*/
|
|
status = acpi_rs_address16_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_EXTENDED_XRUPT:
|
|
/*
|
|
* Extended IRQ
|
|
*/
|
|
status =
|
|
acpi_rs_extended_irq_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_IRQ_FORMAT:
|
|
/*
|
|
* IRQ Resource
|
|
*/
|
|
status = acpi_rs_irq_resource(byte_stream_buffer,
|
|
&bytes_consumed, &buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_DMA_FORMAT:
|
|
/*
|
|
* DMA Resource
|
|
*/
|
|
status = acpi_rs_dma_resource(byte_stream_buffer,
|
|
&bytes_consumed, &buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_START_DEPENDENT:
|
|
/*
|
|
* Start Dependent Functions Resource
|
|
*/
|
|
status =
|
|
acpi_rs_start_depend_fns_resource
|
|
(byte_stream_buffer, &bytes_consumed, &buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_END_DEPENDENT:
|
|
/*
|
|
* End Dependent Functions Resource
|
|
*/
|
|
status =
|
|
acpi_rs_end_depend_fns_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_IO_PORT:
|
|
/*
|
|
* IO Port Resource
|
|
*/
|
|
status = acpi_rs_io_resource(byte_stream_buffer,
|
|
&bytes_consumed, &buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_FIXED_IO_PORT:
|
|
/*
|
|
* Fixed IO Port Resource
|
|
*/
|
|
status = acpi_rs_fixed_io_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_SMALL_VENDOR:
|
|
/*
|
|
* Vendor Specific Resource
|
|
*/
|
|
status = acpi_rs_vendor_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
case ACPI_RDESC_TYPE_END_TAG:
|
|
/*
|
|
* End Tag
|
|
*/
|
|
end_tag_processed = TRUE;
|
|
status = acpi_rs_end_tag_resource(byte_stream_buffer,
|
|
&bytes_consumed,
|
|
&buffer,
|
|
&structure_size);
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* Invalid/Unknown resource type
|
|
*/
|
|
status = AE_AML_INVALID_RESOURCE_TYPE;
|
|
break;
|
|
}
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Update the return value and counter */
|
|
|
|
bytes_parsed += bytes_consumed;
|
|
|
|
/* Set the byte stream to point to the next resource */
|
|
|
|
byte_stream_buffer += bytes_consumed;
|
|
|
|
/* Set the Buffer to the next structure */
|
|
|
|
resource = ACPI_CAST_PTR(struct acpi_resource, buffer);
|
|
resource->length =
|
|
(u32) ACPI_ALIGN_RESOURCE_SIZE(resource->length);
|
|
buffer += ACPI_ALIGN_RESOURCE_SIZE(structure_size);
|
|
}
|
|
|
|
/* Check the reason for exiting the while loop */
|
|
|
|
if (!end_tag_processed) {
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_list_to_byte_stream
|
|
*
|
|
* PARAMETERS: linked_list - Pointer to the resource linked list
|
|
* byte_steam_size_needed - Calculated size of the byte stream
|
|
* needed from calling
|
|
* acpi_rs_get_byte_stream_length()
|
|
* The size of the output_buffer is
|
|
* guaranteed to be >=
|
|
* byte_stream_size_needed
|
|
* output_buffer - Pointer to the buffer that will
|
|
* contain the byte stream
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Takes the resource linked list and parses it, creating a
|
|
* byte stream of resources in the caller's output buffer
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_rs_list_to_byte_stream(struct acpi_resource *linked_list,
|
|
acpi_size byte_stream_size_needed,
|
|
u8 * output_buffer)
|
|
{
|
|
acpi_status status;
|
|
u8 *buffer = output_buffer;
|
|
acpi_size bytes_consumed = 0;
|
|
u8 done = FALSE;
|
|
|
|
ACPI_FUNCTION_TRACE("rs_list_to_byte_stream");
|
|
|
|
while (!done) {
|
|
switch (linked_list->id) {
|
|
case ACPI_RSTYPE_IRQ:
|
|
/*
|
|
* IRQ Resource
|
|
*/
|
|
status =
|
|
acpi_rs_irq_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_DMA:
|
|
/*
|
|
* DMA Resource
|
|
*/
|
|
status =
|
|
acpi_rs_dma_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_START_DPF:
|
|
/*
|
|
* Start Dependent Functions Resource
|
|
*/
|
|
status = acpi_rs_start_depend_fns_stream(linked_list,
|
|
&buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_END_DPF:
|
|
/*
|
|
* End Dependent Functions Resource
|
|
*/
|
|
status = acpi_rs_end_depend_fns_stream(linked_list,
|
|
&buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_IO:
|
|
/*
|
|
* IO Port Resource
|
|
*/
|
|
status =
|
|
acpi_rs_io_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_FIXED_IO:
|
|
/*
|
|
* Fixed IO Port Resource
|
|
*/
|
|
status =
|
|
acpi_rs_fixed_io_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_VENDOR:
|
|
/*
|
|
* Vendor Defined Resource
|
|
*/
|
|
status =
|
|
acpi_rs_vendor_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_END_TAG:
|
|
/*
|
|
* End Tag
|
|
*/
|
|
status =
|
|
acpi_rs_end_tag_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
|
|
/* An End Tag indicates the end of the Resource Template */
|
|
|
|
done = TRUE;
|
|
break;
|
|
|
|
case ACPI_RSTYPE_MEM24:
|
|
/*
|
|
* 24-Bit Memory Resource
|
|
*/
|
|
status =
|
|
acpi_rs_memory24_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_MEM32:
|
|
/*
|
|
* 32-Bit Memory Range Resource
|
|
*/
|
|
status =
|
|
acpi_rs_memory32_range_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_FIXED_MEM32:
|
|
/*
|
|
* 32-Bit Fixed Memory Resource
|
|
*/
|
|
status =
|
|
acpi_rs_fixed_memory32_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_ADDRESS16:
|
|
/*
|
|
* 16-Bit Address Descriptor Resource
|
|
*/
|
|
status = acpi_rs_address16_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_ADDRESS32:
|
|
/*
|
|
* 32-Bit Address Descriptor Resource
|
|
*/
|
|
status = acpi_rs_address32_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_ADDRESS64:
|
|
/*
|
|
* 64-Bit Address Descriptor Resource
|
|
*/
|
|
status = acpi_rs_address64_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
case ACPI_RSTYPE_EXT_IRQ:
|
|
/*
|
|
* Extended IRQ Resource
|
|
*/
|
|
status =
|
|
acpi_rs_extended_irq_stream(linked_list, &buffer,
|
|
&bytes_consumed);
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* If we get here, everything is out of sync,
|
|
* so exit with an error
|
|
*/
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Invalid descriptor type (%X) in resource list\n",
|
|
linked_list->id));
|
|
status = AE_BAD_DATA;
|
|
break;
|
|
}
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Set the Buffer to point to the open byte */
|
|
|
|
buffer += bytes_consumed;
|
|
|
|
/* Point to the next object */
|
|
|
|
linked_list = ACPI_PTR_ADD(struct acpi_resource,
|
|
linked_list, linked_list->length);
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|