/*******************************************************************************
*
* Module Name: rsmisc - Miscellaneous resource descriptors
*
******************************************************************************/
/*
* 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("rsmisc")
/*******************************************************************************
*
* FUNCTION: acpi_rs_end_tag_resource
*
* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
* stream
* bytes_consumed - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* 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,
acpi_size * bytes_consumed,
u8 ** output_buffer, acpi_size * structure_size)
{
struct acpi_resource *output_struct = (void *)*output_buffer;
acpi_size struct_size = ACPI_RESOURCE_LENGTH;
ACPI_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 - Pointer to where the number of bytes
* used in the output_buffer is returned
*
* 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(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer = *output_buffer;
u8 temp8 = 0;
ACPI_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 = ACPI_PTR_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 - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* 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,
acpi_size * bytes_consumed,
u8 ** output_buffer, acpi_size * structure_size)
{
u8 *buffer = byte_stream_buffer;
struct acpi_resource *output_struct = (void *)*output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
u8 index;
acpi_size struct_size =
ACPI_SIZEOF_RESOURCE(struct acpi_resource_vendor);
ACPI_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 */
ACPI_MOVE_16_TO_16(&temp16, buffer);
/* Calculate bytes consumed */
*bytes_consumed = (acpi_size) 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 = (acpi_size) 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 += ACPI_ROUND_UP_to_32_bITS(temp16);
/* Set the Length parameter */
output_struct->length = (u32) 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 - Pointer to where the number of bytes
* used in the output_buffer is returned
*
* 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(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer = *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
u8 index;
ACPI_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;
ACPI_MOVE_16_TO_16(buffer, &temp16);
buffer += 2;
} else {
/* Small Item, Set the descriptor field */
temp8 = 0x70;
temp8 |= (u8) 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 = ACPI_PTR_DIFF(buffer, *output_buffer);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_start_depend_fns_resource
*
* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
* stream
* bytes_consumed - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* 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_depend_fns_resource(u8 * byte_stream_buffer,
acpi_size * bytes_consumed,
u8 ** output_buffer,
acpi_size * structure_size)
{
u8 *buffer = byte_stream_buffer;
struct acpi_resource *output_struct = (void *)*output_buffer;
u8 temp8 = 0;
acpi_size struct_size =
ACPI_SIZEOF_RESOURCE(struct acpi_resource_start_dpf);
ACPI_FUNCTION_TRACE("rs_start_depend_fns_resource");
/* The number of bytes consumed are found 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_BAD_RESOURCE_VALUE);
}
/* 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_BAD_RESOURCE_VALUE);
}
} else {
output_struct->data.start_dpf.compatibility_priority =
ACPI_ACCEPTABLE_CONFIGURATION;
output_struct->data.start_dpf.performance_robustness =
ACPI_ACCEPTABLE_CONFIGURATION;
}
/* Set the Length parameter */
output_struct->length = (u32) struct_size;
/* Return the final size of the structure */
*structure_size = struct_size;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_end_depend_fns_resource
*
* PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
* stream
* bytes_consumed - Pointer to where the number of bytes
* consumed the byte_stream_buffer is
* returned
* output_buffer - Pointer to the return data buffer
* structure_size - Pointer to where the number of bytes
* in the return data struct is returned
*
* 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_depend_fns_resource(u8 * byte_stream_buffer,
acpi_size * bytes_consumed,
u8 ** output_buffer, acpi_size * structure_size)
{
struct acpi_resource *output_struct = (void *)*output_buffer;
acpi_size struct_size = ACPI_RESOURCE_LENGTH;
ACPI_FUNCTION_TRACE("rs_end_depend_fns_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 = (u32) struct_size;
/* Return the final size of the structure */
*structure_size = struct_size;
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_start_depend_fns_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_depend_fns_stream(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer = *output_buffer;
u8 temp8 = 0;
ACPI_FUNCTION_TRACE("rs_start_depend_fns_stream");
/*
* The descriptor field is set based upon whether a byte is needed
* to contain Priority data.
*/
if (ACPI_ACCEPTABLE_CONFIGURATION ==
linked_list->data.start_dpf.compatibility_priority &&
ACPI_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 = ACPI_PTR_DIFF(buffer, *output_buffer);
return_ACPI_STATUS(AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_end_depend_fns_stream
*
* PARAMETERS: linked_list - Pointer to the resource linked list
* output_buffer - Pointer to the user's return buffer
* bytes_consumed - Pointer to where the number of bytes
* used in the output_buffer is returned
*
* 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_depend_fns_stream(struct acpi_resource *linked_list,
u8 ** output_buffer, acpi_size * bytes_consumed)
{
u8 *buffer = *output_buffer;
ACPI_FUNCTION_TRACE("rs_end_depend_fns_stream");
/* The descriptor field is static */
*buffer = 0x38;
buffer += 1;
/* Return the number of bytes consumed in this operation */
*bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
return_ACPI_STATUS(AE_OK);
}
