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606 lines
17 KiB
C
606 lines
17 KiB
C
/*******************************************************************************
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*
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* Module Name: rsmisc - Acpi_rs_end_tag_resource
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* Acpi_rs_end_tag_stream
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* Acpi_rs_vendor_resource
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* Acpi_rs_vendor_stream
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* Acpi_rs_start_dependent_functions_resource
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* Acpi_rs_end_dependent_functions_resource
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* Acpi_rs_start_dependent_functions_stream
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* Acpi_rs_end_dependent_functions_stream
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* $Revision: 1.1 $
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*
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******************************************************************************/
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/*
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* Copyright (C) 2000, 2001 R. Byron Moore
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <acpi.h>
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#define _COMPONENT ACPI_RESOURCES
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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 - u32 pointer that is filled with
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* the number of bytes consumed from
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* the Byte_stream_buffer
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* Output_buffer - Pointer to the user's return buffer
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* Structure_size - u32 pointer that is filled with
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* the number of bytes in the filled
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* in structure
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*
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* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
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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 (
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u8 *byte_stream_buffer,
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u32 *bytes_consumed,
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u8 **output_buffer,
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u32 *structure_size)
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{
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RESOURCE *output_struct = (RESOURCE *) * output_buffer;
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u32 struct_size = RESOURCE_LENGTH;
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/*
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* The number of bytes consumed is static
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*/
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*bytes_consumed = 2;
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/*
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* Fill out the structure
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*/
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output_struct->id = end_tag;
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/*
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* Set the Length parameter
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*/
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output_struct->length = 0;
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/*
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* Return the final size of the structure
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*/
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*structure_size = struct_size;
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return (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 - 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 AE_OK if okay, else a valid ACPI_STATUS code
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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 (
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RESOURCE *linked_list,
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u8 **output_buffer,
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u32 *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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/*
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* The descriptor field is static
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*/
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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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/*
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* Return the number of bytes consumed in this operation
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*/
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*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
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(NATIVE_UINT) *output_buffer);
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return (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 - u32 pointer that is filled with
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* the number of bytes consumed from
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* the Byte_stream_buffer
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* Output_buffer - Pointer to the user's return buffer
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* Structure_size - u32 pointer that is filled with
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* the number of bytes in the filled
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* in structure
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*
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* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
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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 (
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u8 *byte_stream_buffer,
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u32 *bytes_consumed,
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u8 **output_buffer,
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u32 *structure_size)
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{
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u8 *buffer = byte_stream_buffer;
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RESOURCE *output_struct = (RESOURCE *) * 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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u32 struct_size = sizeof (VENDOR_RESOURCE) +
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RESOURCE_LENGTH_NO_DATA;
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/*
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* Dereference the Descriptor to find if this is a large or small item.
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*/
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temp8 = *buffer;
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if (temp8 & 0x80) {
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/*
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* Large Item
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*/
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/* Point to the length field */
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buffer += 1;
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/* Dereference */
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MOVE_UNALIGNED16_TO_16 (&temp16, buffer);
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/* Calculate bytes consumed */
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*bytes_consumed = temp16 + 3;
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/* Point to the first vendor byte */
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buffer += 2;
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}
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else {
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/*
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* Small Item
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*/
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/* Dereference the size */
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temp16 = (u8)(*buffer & 0x07);
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/* Calculate bytes consumed */
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*bytes_consumed = 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 = vendor_specific;
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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 boundry,
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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 boundry.
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*/
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struct_size += ROUND_UP_TO_32_bITS (temp16);
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/*
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* Set the Length parameter
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*/
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output_struct->length = struct_size;
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/*
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* Return the final size of the structure
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*/
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*structure_size = struct_size;
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return (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 - 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 AE_OK if okay, else a valid ACPI_STATUS code
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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 (
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RESOURCE *linked_list,
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u8 **output_buffer,
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u32 *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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/*
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* Dereference the length to find if this is a large or small item.
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*/
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if(linked_list->data.vendor_specific.length > 7) {
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/*
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* Large Item
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*/
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/*
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* Set the descriptor field and length bytes
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*/
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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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MOVE_UNALIGNED16_TO_16 (buffer, &temp16);
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buffer += 2;
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}
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else {
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/*
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* Small Item
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*/
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/*
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* Set the descriptor field
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*/
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temp8 = 0x70;
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temp8 |= 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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/*
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* Loop through all of the Vendor Specific fields
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*/
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for (index = 0; index < linked_list->data.vendor_specific.length; 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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/*
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* Return the number of bytes consumed in this operation
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*/
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*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
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(NATIVE_UINT) *output_buffer);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: Acpi_rs_start_dependent_functions_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 - u32 pointer that is filled with
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* the number of bytes consumed from
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* the Byte_stream_buffer
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* Output_buffer - Pointer to the user's return buffer
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* Structure_size - u32 pointer that is filled with
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* the number of bytes in the filled
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* in structure
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*
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* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
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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_dependent_functions_resource (
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u8 *byte_stream_buffer,
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u32 *bytes_consumed,
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u8 **output_buffer,
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u32 *structure_size)
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{
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u8 *buffer = byte_stream_buffer;
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RESOURCE *output_struct = (RESOURCE *) * output_buffer;
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u8 temp8 = 0;
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u32 struct_size =
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sizeof(START_DEPENDENT_FUNCTIONS_RESOURCE) +
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RESOURCE_LENGTH_NO_DATA;
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/*
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* The number of bytes consumed are contained in the descriptor (Bits:0-1)
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*/
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temp8 = *buffer;
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*bytes_consumed = (temp8 & 0x01) + 1;
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output_struct->id = start_dependent_functions;
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/*
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* Point to Byte 1 if it is used
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*/
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if (2 == *bytes_consumed) {
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buffer += 1;
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temp8 = *buffer;
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/*
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* Check Compatibility priority
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*/
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output_struct->data.start_dependent_functions.compatibility_priority =
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temp8 & 0x03;
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if (3 == output_struct->data.start_dependent_functions.compatibility_priority) {
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return (AE_AML_ERROR);
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}
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/*
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* Check Performance/Robustness preference
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*/
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output_struct->data.start_dependent_functions.performance_robustness =
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(temp8 >> 2) & 0x03;
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if (3 == output_struct->data.start_dependent_functions.performance_robustness) {
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return (AE_AML_ERROR);
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}
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}
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else {
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output_struct->data.start_dependent_functions.compatibility_priority =
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ACCEPTABLE_CONFIGURATION;
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output_struct->data.start_dependent_functions.performance_robustness =
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ACCEPTABLE_CONFIGURATION;
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}
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/*
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* Set the Length parameter
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*/
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output_struct->length = struct_size;
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/*
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* Return the final size of the structure
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*/
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*structure_size = struct_size;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: Acpi_rs_end_dependent_functions_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 - u32 pointer that is filled with
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* the number of bytes consumed from
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* the Byte_stream_buffer
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* Output_buffer - Pointer to the user's return buffer
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* Structure_size - u32 pointer that is filled with
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* the number of bytes in the filled
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* in structure
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*
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* RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
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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_dependent_functions_resource (
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u8 *byte_stream_buffer,
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u32 *bytes_consumed,
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u8 **output_buffer,
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u32 *structure_size)
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{
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RESOURCE *output_struct = (RESOURCE *) * output_buffer;
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u32 struct_size = RESOURCE_LENGTH;
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/*
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* The number of bytes consumed is static
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*/
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*bytes_consumed = 1;
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/*
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* Fill out the structure
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*/
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output_struct->id = end_dependent_functions;
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/*
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* Set the Length parameter
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*/
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output_struct->length = struct_size;
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/*
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* Return the final size of the structure
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*/
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*structure_size = struct_size;
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: Acpi_rs_start_dependent_functions_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 AE_OK if okay, else a valid ACPI_STATUS code
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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_dependent_functions_stream (
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RESOURCE *linked_list,
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u8 **output_buffer,
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u32 *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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/*
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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 (ACCEPTABLE_CONFIGURATION ==
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linked_list->data.start_dependent_functions.compatibility_priority &&
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ACCEPTABLE_CONFIGURATION ==
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linked_list->data.start_dependent_functions.performance_robustness) {
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*buffer = 0x30;
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}
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else {
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*buffer = 0x31;
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buffer += 1;
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/*
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* Set the Priority Byte Definition
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*/
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temp8 = 0;
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temp8 = (u8)
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((linked_list->data.start_dependent_functions.performance_robustness &
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0x03) << 2);
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temp8 |=
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(linked_list->data.start_dependent_functions.compatibility_priority &
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0x03);
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*buffer = temp8;
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}
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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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*/
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*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
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(NATIVE_UINT) *output_buffer);
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: Acpi_rs_end_dependent_functions_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 AE_OK if okay, else a valid ACPI_STATUS code
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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_dependent_functions_stream (
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RESOURCE *linked_list,
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u8 **output_buffer,
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u32 *bytes_consumed
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)
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{
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u8 *buffer = *output_buffer;
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/*
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* The descriptor field is static
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*/
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*buffer = 0x38;
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buffer += 1;
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|
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/*
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* Return the number of bytes consumed in this operation
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*/
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*bytes_consumed = (u32) ((NATIVE_UINT) buffer -
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(NATIVE_UINT) *output_buffer);
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|
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return (AE_OK);
|
|
}
|
|
|