mirror of https://gitee.com/openkylin/linux.git
528 lines
16 KiB
C
528 lines
16 KiB
C
/*******************************************************************************
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*
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* Module Name: rsmisc - Miscellaneous resource descriptors
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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("rsmisc")
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/*******************************************************************************
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*
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* FUNCTION: acpi_rs_end_tag_resource
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*
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* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
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* stream
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* bytes_consumed - Pointer to where the number of bytes
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* consumed the byte_stream_buffer is
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* returned
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* output_buffer - Pointer to the return data buffer
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* structure_size - Pointer to where the number of bytes
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* in the return data struct is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the resource byte stream and fill out the appropriate
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* structure pointed to by the output_buffer. Return the
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* number of bytes consumed from the byte stream.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_end_tag_resource(u8 * byte_stream_buffer,
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acpi_size * bytes_consumed,
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u8 ** output_buffer, acpi_size * structure_size)
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{
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struct acpi_resource *output_struct = (void *)*output_buffer;
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acpi_size struct_size = ACPI_RESOURCE_LENGTH;
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ACPI_FUNCTION_TRACE("rs_end_tag_resource");
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/* The number of bytes consumed is static */
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*bytes_consumed = 2;
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/* Fill out the structure */
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output_struct->id = ACPI_RSTYPE_END_TAG;
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/* Set the Length parameter */
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output_struct->length = 0;
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/* Return the final size of the structure */
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*structure_size = struct_size;
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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_end_tag_stream
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*
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* PARAMETERS: linked_list - Pointer to the resource linked list
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* output_buffer - Pointer to the user's return buffer
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* bytes_consumed - Pointer to where the number of bytes
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* used in the output_buffer is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the linked list resource structure and fills in the
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* the appropriate bytes in a byte stream
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*
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******************************************************************************/
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acpi_status
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acpi_rs_end_tag_stream(struct acpi_resource *linked_list,
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u8 ** output_buffer, acpi_size * bytes_consumed)
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{
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u8 *buffer = *output_buffer;
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u8 temp8 = 0;
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ACPI_FUNCTION_TRACE("rs_end_tag_stream");
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/* The descriptor field is static */
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*buffer = 0x79;
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buffer += 1;
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/*
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* Set the Checksum - zero means that the resource data is treated as if
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* the checksum operation succeeded (ACPI Spec 1.0b Section 6.4.2.8)
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*/
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temp8 = 0;
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*buffer = temp8;
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buffer += 1;
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/* Return the number of bytes consumed in this operation */
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*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
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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_vendor_resource
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*
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* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
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* stream
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* bytes_consumed - Pointer to where the number of bytes
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* consumed the byte_stream_buffer is
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* returned
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* output_buffer - Pointer to the return data buffer
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* structure_size - Pointer to where the number of bytes
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* in the return data struct is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the resource byte stream and fill out the appropriate
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* structure pointed to by the output_buffer. Return the
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* number of bytes consumed from the byte stream.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_vendor_resource(u8 * byte_stream_buffer,
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acpi_size * bytes_consumed,
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u8 ** output_buffer, acpi_size * structure_size)
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{
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u8 *buffer = byte_stream_buffer;
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struct acpi_resource *output_struct = (void *)*output_buffer;
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u16 temp16 = 0;
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u8 temp8 = 0;
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u8 index;
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acpi_size struct_size =
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ACPI_SIZEOF_RESOURCE(struct acpi_resource_vendor);
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ACPI_FUNCTION_TRACE("rs_vendor_resource");
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/* Dereference the Descriptor to find if this is a large or small item. */
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temp8 = *buffer;
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if (temp8 & 0x80) {
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/* Large Item, point to the length field */
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buffer += 1;
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/* Dereference */
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ACPI_MOVE_16_TO_16(&temp16, buffer);
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/* Calculate bytes consumed */
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*bytes_consumed = (acpi_size) temp16 + 3;
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/* Point to the first vendor byte */
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buffer += 2;
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} else {
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/* Small Item, dereference the size */
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temp16 = (u8) (*buffer & 0x07);
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/* Calculate bytes consumed */
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*bytes_consumed = (acpi_size) temp16 + 1;
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/* Point to the first vendor byte */
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buffer += 1;
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}
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output_struct->id = ACPI_RSTYPE_VENDOR;
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output_struct->data.vendor_specific.length = temp16;
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for (index = 0; index < temp16; index++) {
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output_struct->data.vendor_specific.reserved[index] = *buffer;
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buffer += 1;
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}
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/*
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* In order for the struct_size to fall on a 32-bit boundary,
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* calculate the length of the vendor string and expand the
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* struct_size to the next 32-bit boundary.
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*/
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struct_size += ACPI_ROUND_UP_to_32_bITS(temp16);
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/* Set the Length parameter */
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output_struct->length = (u32) struct_size;
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/* Return the final size of the structure */
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*structure_size = struct_size;
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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_vendor_stream
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*
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* PARAMETERS: linked_list - Pointer to the resource linked list
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* output_buffer - Pointer to the user's return buffer
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* bytes_consumed - Pointer to where the number of bytes
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* used in the output_buffer is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the linked list resource structure and fills in the
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* the appropriate bytes in a byte stream
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*
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******************************************************************************/
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acpi_status
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acpi_rs_vendor_stream(struct acpi_resource *linked_list,
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u8 ** output_buffer, acpi_size * bytes_consumed)
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{
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u8 *buffer = *output_buffer;
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u16 temp16 = 0;
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u8 temp8 = 0;
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u8 index;
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ACPI_FUNCTION_TRACE("rs_vendor_stream");
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/* Dereference the length to find if this is a large or small item. */
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if (linked_list->data.vendor_specific.length > 7) {
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/* Large Item, Set the descriptor field and length bytes */
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*buffer = 0x84;
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buffer += 1;
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temp16 = (u16) linked_list->data.vendor_specific.length;
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ACPI_MOVE_16_TO_16(buffer, &temp16);
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buffer += 2;
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} else {
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/* Small Item, Set the descriptor field */
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temp8 = 0x70;
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temp8 |= (u8) linked_list->data.vendor_specific.length;
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*buffer = temp8;
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buffer += 1;
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}
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/* Loop through all of the Vendor Specific fields */
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for (index = 0; index < linked_list->data.vendor_specific.length;
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index++) {
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temp8 = linked_list->data.vendor_specific.reserved[index];
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*buffer = temp8;
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buffer += 1;
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}
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/* Return the number of bytes consumed in this operation */
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*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
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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_start_depend_fns_resource
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*
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* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
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* stream
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* bytes_consumed - Pointer to where the number of bytes
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* consumed the byte_stream_buffer is
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* returned
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* output_buffer - Pointer to the return data buffer
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* structure_size - Pointer to where the number of bytes
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* in the return data struct is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the resource byte stream and fill out the appropriate
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* structure pointed to by the output_buffer. Return the
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* number of bytes consumed from the byte stream.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_start_depend_fns_resource(u8 * byte_stream_buffer,
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acpi_size * bytes_consumed,
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u8 ** output_buffer,
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acpi_size * structure_size)
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{
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u8 *buffer = byte_stream_buffer;
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struct acpi_resource *output_struct = (void *)*output_buffer;
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u8 temp8 = 0;
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acpi_size struct_size =
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ACPI_SIZEOF_RESOURCE(struct acpi_resource_start_dpf);
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ACPI_FUNCTION_TRACE("rs_start_depend_fns_resource");
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/* The number of bytes consumed are found in the descriptor (Bits:0-1) */
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temp8 = *buffer;
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*bytes_consumed = (temp8 & 0x01) + 1;
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output_struct->id = ACPI_RSTYPE_START_DPF;
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/* Point to Byte 1 if it is used */
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if (2 == *bytes_consumed) {
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buffer += 1;
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temp8 = *buffer;
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/* Check Compatibility priority */
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output_struct->data.start_dpf.compatibility_priority =
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temp8 & 0x03;
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if (3 == output_struct->data.start_dpf.compatibility_priority) {
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return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
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}
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/* Check Performance/Robustness preference */
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output_struct->data.start_dpf.performance_robustness =
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(temp8 >> 2) & 0x03;
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if (3 == output_struct->data.start_dpf.performance_robustness) {
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return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
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}
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} else {
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output_struct->data.start_dpf.compatibility_priority =
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ACPI_ACCEPTABLE_CONFIGURATION;
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output_struct->data.start_dpf.performance_robustness =
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ACPI_ACCEPTABLE_CONFIGURATION;
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}
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/* Set the Length parameter */
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output_struct->length = (u32) struct_size;
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/* Return the final size of the structure */
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*structure_size = struct_size;
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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_end_depend_fns_resource
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*
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* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
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* stream
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* bytes_consumed - Pointer to where the number of bytes
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* consumed the byte_stream_buffer is
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* returned
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* output_buffer - Pointer to the return data buffer
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* structure_size - Pointer to where the number of bytes
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* in the return data struct is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the resource byte stream and fill out the appropriate
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* structure pointed to by the output_buffer. Return the
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* number of bytes consumed from the byte stream.
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*
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******************************************************************************/
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acpi_status
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acpi_rs_end_depend_fns_resource(u8 * byte_stream_buffer,
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acpi_size * bytes_consumed,
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u8 ** output_buffer, acpi_size * structure_size)
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{
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struct acpi_resource *output_struct = (void *)*output_buffer;
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acpi_size struct_size = ACPI_RESOURCE_LENGTH;
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ACPI_FUNCTION_TRACE("rs_end_depend_fns_resource");
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/* The number of bytes consumed is static */
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*bytes_consumed = 1;
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/* Fill out the structure */
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output_struct->id = ACPI_RSTYPE_END_DPF;
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/* Set the Length parameter */
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output_struct->length = (u32) struct_size;
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/* Return the final size of the structure */
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*structure_size = struct_size;
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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_start_depend_fns_stream
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*
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* PARAMETERS: linked_list - Pointer to the resource linked list
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* output_buffer - Pointer to the user's return buffer
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* bytes_consumed - u32 pointer that is filled with
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* the number of bytes of the
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* output_buffer used
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the linked list resource structure and fills in the
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* the appropriate bytes in a byte stream
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*
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******************************************************************************/
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acpi_status
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acpi_rs_start_depend_fns_stream(struct acpi_resource *linked_list,
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u8 ** output_buffer, acpi_size * bytes_consumed)
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{
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u8 *buffer = *output_buffer;
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u8 temp8 = 0;
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ACPI_FUNCTION_TRACE("rs_start_depend_fns_stream");
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/*
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* The descriptor field is set based upon whether a byte is needed
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* to contain Priority data.
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*/
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if (ACPI_ACCEPTABLE_CONFIGURATION ==
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linked_list->data.start_dpf.compatibility_priority &&
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ACPI_ACCEPTABLE_CONFIGURATION ==
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linked_list->data.start_dpf.performance_robustness) {
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*buffer = 0x30;
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} else {
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*buffer = 0x31;
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buffer += 1;
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/* Set the Priority Byte Definition */
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temp8 = 0;
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temp8 =
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(u8) ((linked_list->data.start_dpf.
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performance_robustness & 0x03) << 2);
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temp8 |=
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(linked_list->data.start_dpf.compatibility_priority & 0x03);
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*buffer = temp8;
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}
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buffer += 1;
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/* Return the number of bytes consumed in this operation */
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*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
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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_end_depend_fns_stream
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*
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* PARAMETERS: linked_list - Pointer to the resource linked list
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* output_buffer - Pointer to the user's return buffer
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* bytes_consumed - Pointer to where the number of bytes
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* used in the output_buffer is returned
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*
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* RETURN: Status
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*
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* DESCRIPTION: Take the linked list resource structure and fills in the
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* the appropriate bytes in a byte stream
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*
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******************************************************************************/
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acpi_status
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acpi_rs_end_depend_fns_stream(struct acpi_resource *linked_list,
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u8 ** output_buffer, acpi_size * bytes_consumed)
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{
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u8 *buffer = *output_buffer;
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ACPI_FUNCTION_TRACE("rs_end_depend_fns_stream");
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/* The descriptor field is static */
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*buffer = 0x38;
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buffer += 1;
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/* Return the number of bytes consumed in this operation */
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*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
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return_ACPI_STATUS(AE_OK);
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}
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