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/*******************************************************************************
*
* Module Name: rsmisc - Miscellaneous resource descriptors
* $Revision: 16 $
*
******************************************************************************/
/*
* Copyright (C) 2000, 2001 R. Byron Moore
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "acpi.h"
#include "acresrc.h"
#define _COMPONENT ACPI_RESOURCES
MODULE_NAME ("rsmisc")
/*******************************************************************************
*
* FUNCTION: Acpi_rs_end_tag_resource
*
* PARAMETERS: Byte_stream_buffer - Pointer to the resource input byte
* stream
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes consumed from
* the Byte_stream_buffer
* Output_buffer - Pointer to the user's return buffer
* Structure_size - u32 pointer that is filled with
* the number of bytes in the filled
* in structure
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the Output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_end_tag_resource (
u8 *byte_stream_buffer,
u32 *bytes_consumed,
u8 **output_buffer,
u32 *structure_size)
{
acpi_resource *output_struct = (acpi_resource *) *output_buffer;
u32 struct_size = ACPI_RESOURCE_LENGTH;
FUNCTION_TRACE ("Rs_end_tag_resource");
/*
* The number of bytes consumed is static
*/
*bytes_consumed = 2;
/*
* Fill out the structure
*/
output_struct->id = ACPI_RSTYPE_END_TAG;
/*
* Set the Length parameter
*/
output_struct->length = 0;
/*
* Return the final size of the structure
*/
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_end_tag_stream
*
* PARAMETERS: Linked_list - Pointer to the resource linked list
* Output_buffer - Pointer to the user's return buffer
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes of the
* Output_buffer used
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_end_tag_stream (
acpi_resource *linked_list,
u8 **output_buffer,
u32 *bytes_consumed)
{
u8 *buffer = *output_buffer;
u8 temp8 = 0;
FUNCTION_TRACE ("Rs_end_tag_stream");
/*
* The descriptor field is static
*/
*buffer = 0x79;
buffer += 1;
/*
* Set the Checksum - zero means that the resource data is treated as if
* the checksum operation succeeded (ACPI Spec 1.0b Section 6.4.2.8)
*/
temp8 = 0;
*buffer = temp8;
buffer += 1;
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = POINTER_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_vendor_resource
*
* PARAMETERS: Byte_stream_buffer - Pointer to the resource input byte
* stream
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes consumed from
* the Byte_stream_buffer
* Output_buffer - Pointer to the user's return buffer
* Structure_size - u32 pointer that is filled with
* the number of bytes in the filled
* in structure
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the Output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_vendor_resource (
u8 *byte_stream_buffer,
u32 *bytes_consumed,
u8 **output_buffer,
u32 *structure_size)
{
u8 *buffer = byte_stream_buffer;
acpi_resource *output_struct = (acpi_resource *) *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
u8 index;
u32 struct_size = SIZEOF_RESOURCE (acpi_resource_vendor);
FUNCTION_TRACE ("Rs_vendor_resource");
/*
* Dereference the Descriptor to find if this is a large or small item.
*/
temp8 = *buffer;
if (temp8 & 0x80) {
/*
* Large Item
* Point to the length field
*/
buffer += 1;
/* Dereference */
MOVE_UNALIGNED16_TO_16 (&temp16, buffer);
/* Calculate bytes consumed */
*bytes_consumed = temp16 + 3;
/* Point to the first vendor byte */
buffer += 2;
}
else {
/*
* Small Item
* Dereference the size
*/
temp16 = (u8)(*buffer & 0x07);
/* Calculate bytes consumed */
*bytes_consumed = temp16 + 1;
/* Point to the first vendor byte */
buffer += 1;
}
output_struct->id = ACPI_RSTYPE_VENDOR;
output_struct->data.vendor_specific.length = temp16;
for (index = 0; index < temp16; index++) {
output_struct->data.vendor_specific.reserved[index] = *buffer;
buffer += 1;
}
/*
* In order for the Struct_size to fall on a 32-bit boundary,
* calculate the length of the vendor string and expand the
* Struct_size to the next 32-bit boundary.
*/
struct_size += ROUND_UP_TO_32_bITS (temp16);
/*
* Set the Length parameter
*/
output_struct->length = struct_size;
/*
* Return the final size of the structure
*/
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_vendor_stream
*
* PARAMETERS: Linked_list - Pointer to the resource linked list
* Output_buffer - Pointer to the user's return buffer
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes of the
* Output_buffer used
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_vendor_stream (
acpi_resource *linked_list,
u8 **output_buffer,
u32 *bytes_consumed)
{
u8 *buffer = *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
u8 index;
FUNCTION_TRACE ("Rs_vendor_stream");
/*
* Dereference the length to find if this is a large or small item.
*/
if(linked_list->data.vendor_specific.length > 7) {
/*
* Large Item
* Set the descriptor field and length bytes
*/
*buffer = 0x84;
buffer += 1;
temp16 = (u16) linked_list->data.vendor_specific.length;
MOVE_UNALIGNED16_TO_16 (buffer, &temp16);
buffer += 2;
}
else {
/*
* Small Item
* Set the descriptor field
*/
temp8 = 0x70;
temp8 |= linked_list->data.vendor_specific.length;
*buffer = temp8;
buffer += 1;
}
/*
* Loop through all of the Vendor Specific fields
*/
for (index = 0; index < linked_list->data.vendor_specific.length; index++) {
temp8 = linked_list->data.vendor_specific.reserved[index];
*buffer = temp8;
buffer += 1;
}
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = POINTER_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_start_dependent_functions_resource
*
* PARAMETERS: Byte_stream_buffer - Pointer to the resource input byte
* stream
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes consumed from
* the Byte_stream_buffer
* Output_buffer - Pointer to the user's return buffer
* Structure_size - u32 pointer that is filled with
* the number of bytes in the filled
* in structure
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the Output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_start_dependent_functions_resource (
u8 *byte_stream_buffer,
u32 *bytes_consumed,
u8 **output_buffer,
u32 *structure_size)
{
u8 *buffer = byte_stream_buffer;
acpi_resource *output_struct = (acpi_resource *) *output_buffer;
u8 temp8 = 0;
u32 struct_size = SIZEOF_RESOURCE (acpi_resource_start_dpf);
FUNCTION_TRACE ("Rs_start_dependent_functions_resource");
/*
* The number of bytes consumed are contained in the descriptor (Bits:0-1)
*/
temp8 = *buffer;
*bytes_consumed = (temp8 & 0x01) + 1;
output_struct->id = ACPI_RSTYPE_START_DPF;
/*
* Point to Byte 1 if it is used
*/
if (2 == *bytes_consumed) {
buffer += 1;
temp8 = *buffer;
/*
* Check Compatibility priority
*/
output_struct->data.start_dpf.compatibility_priority = temp8 & 0x03;
if (3 == output_struct->data.start_dpf.compatibility_priority) {
return_ACPI_STATUS (AE_AML_ERROR);
}
/*
* Check Performance/Robustness preference
*/
output_struct->data.start_dpf.performance_robustness = (temp8 >> 2) & 0x03;
if (3 == output_struct->data.start_dpf.performance_robustness) {
return_ACPI_STATUS (AE_AML_ERROR);
}
}
else {
output_struct->data.start_dpf.compatibility_priority =
ACCEPTABLE_CONFIGURATION;
output_struct->data.start_dpf.performance_robustness =
ACCEPTABLE_CONFIGURATION;
}
/*
* Set the Length parameter
*/
output_struct->length = struct_size;
/*
* Return the final size of the structure
*/
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_end_dependent_functions_resource
*
* PARAMETERS: Byte_stream_buffer - Pointer to the resource input byte
* stream
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes consumed from
* the Byte_stream_buffer
* Output_buffer - Pointer to the user's return buffer
* Structure_size - u32 pointer that is filled with
* the number of bytes in the filled
* in structure
*
* RETURN: Status
*
* DESCRIPTION: Take the resource byte stream and fill out the appropriate
* structure pointed to by the Output_buffer. Return the
* number of bytes consumed from the byte stream.
*
******************************************************************************/
acpi_status
acpi_rs_end_dependent_functions_resource (
u8 *byte_stream_buffer,
u32 *bytes_consumed,
u8 **output_buffer,
u32 *structure_size)
{
acpi_resource *output_struct = (acpi_resource *) *output_buffer;
u32 struct_size = ACPI_RESOURCE_LENGTH;
FUNCTION_TRACE ("Rs_end_dependent_functions_resource");
/*
* The number of bytes consumed is static
*/
*bytes_consumed = 1;
/*
* Fill out the structure
*/
output_struct->id = ACPI_RSTYPE_END_DPF;
/*
* Set the Length parameter
*/
output_struct->length = struct_size;
/*
* Return the final size of the structure
*/
*structure_size = struct_size;
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_start_dependent_functions_stream
*
* PARAMETERS: Linked_list - Pointer to the resource linked list
* Output_buffer - Pointer to the user's return buffer
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes of the
* Output_buffer used
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_start_dependent_functions_stream (
acpi_resource *linked_list,
u8 **output_buffer,
u32 *bytes_consumed)
{
u8 *buffer = *output_buffer;
u8 temp8 = 0;
FUNCTION_TRACE ("Rs_start_dependent_functions_stream");
/*
* The descriptor field is set based upon whether a byte is needed
* to contain Priority data.
*/
if (ACCEPTABLE_CONFIGURATION ==
linked_list->data.start_dpf.compatibility_priority &&
ACCEPTABLE_CONFIGURATION ==
linked_list->data.start_dpf.performance_robustness) {
*buffer = 0x30;
}
else {
*buffer = 0x31;
buffer += 1;
/*
* Set the Priority Byte Definition
*/
temp8 = 0;
temp8 = (u8) ((linked_list->data.start_dpf.performance_robustness &
0x03) << 2);
temp8 |= (linked_list->data.start_dpf.compatibility_priority &
0x03);
*buffer = temp8;
}
buffer += 1;
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = POINTER_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: Acpi_rs_end_dependent_functions_stream
*
* PARAMETERS: Linked_list - Pointer to the resource linked list
* Output_buffer - Pointer to the user's return buffer
* Bytes_consumed - u32 pointer that is filled with
* the number of bytes of the
* Output_buffer used
*
* RETURN: Status
*
* DESCRIPTION: Take the linked list resource structure and fills in the
* the appropriate bytes in a byte stream
*
******************************************************************************/
acpi_status
acpi_rs_end_dependent_functions_stream (
acpi_resource *linked_list,
u8 **output_buffer,
u32 *bytes_consumed
)
{
u8 *buffer = *output_buffer;
FUNCTION_TRACE ("Rs_end_dependent_functions_stream");
/*
* The descriptor field is static
*/
*buffer = 0x38;
buffer += 1;
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = POINTER_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
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