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linux/drivers/acpi/resources/rsaddr.c

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/*******************************************************************************
*
* Module Name: rsaddr - Address resource descriptors (16/32/64)
*
******************************************************************************/
/*
* 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 ("rsaddr")
/*******************************************************************************
*
* FUNCTION: acpi_rs_address16_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_address16_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 *temp_ptr;
acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address16);
u32 index;
u16 temp16;
u8 temp8;
ACPI_FUNCTION_TRACE ("rs_address16_resource");
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
/* Validate minimum descriptor length */
if (temp16 < 13) {
return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
}
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_ADDRESS16;
/*
* Get the Resource Type (Byte3)
*/
buffer += 2;
temp8 = *buffer;
/* Values 0-2 and 0xC0-0xFF are valid */
if ((temp8 > 2) && (temp8 < 0xC0)) {
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
}
output_struct->data.address16.resource_type = temp8;
/*
* Get the General Flags (Byte4)
*/
buffer += 1;
temp8 = *buffer;
/* Producer / Consumer */
output_struct->data.address16.producer_consumer = temp8 & 0x01;
/* Decode */
output_struct->data.address16.decode = (temp8 >> 1) & 0x01;
/* Min Address Fixed */
output_struct->data.address16.min_address_fixed = (temp8 >> 2) & 0x01;
/* Max Address Fixed */
output_struct->data.address16.max_address_fixed = (temp8 >> 3) & 0x01;
/*
* Get the Type Specific Flags (Byte5)
*/
buffer += 1;
temp8 = *buffer;
if (ACPI_MEMORY_RANGE == output_struct->data.address16.resource_type) {
output_struct->data.address16.attribute.memory.read_write_attribute =
(u16) (temp8 & 0x01);
output_struct->data.address16.attribute.memory.cache_attribute =
(u16) ((temp8 >> 1) & 0x03);
}
else {
if (ACPI_IO_RANGE == output_struct->data.address16.resource_type) {
output_struct->data.address16.attribute.io.range_attribute =
(u16) (temp8 & 0x03);
output_struct->data.address16.attribute.io.translation_attribute =
(u16) ((temp8 >> 4) & 0x03);
}
else {
/* BUS_NUMBER_RANGE == Address16.Data->resource_type */
/* Nothing needs to be filled in */
}
}
/*
* Get Granularity (Bytes 6-7)
*/
buffer += 1;
ACPI_MOVE_16_TO_32 (&output_struct->data.address16.granularity, buffer);
/*
* Get min_address_range (Bytes 8-9)
*/
buffer += 2;
ACPI_MOVE_16_TO_32 (&output_struct->data.address16.min_address_range, buffer);
/*
* Get max_address_range (Bytes 10-11)
*/
buffer += 2;
ACPI_MOVE_16_TO_32 (&output_struct->data.address16.max_address_range, buffer);
/*
* Get address_translation_offset (Bytes 12-13)
*/
buffer += 2;
ACPI_MOVE_16_TO_32 (&output_struct->data.address16.address_translation_offset, buffer);
/*
* Get address_length (Bytes 14-15)
*/
buffer += 2;
ACPI_MOVE_16_TO_32 (&output_struct->data.address16.address_length, buffer);
/*
* Resource Source Index (if present)
*/
buffer += 2;
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
* Each Interrupt takes 32-bits + the 5 bytes of the
* stream that are default.
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*bytes_consumed > (16 + 1)) {
/* Dereference the Index */
temp8 = *buffer;
output_struct->data.address16.resource_source.index = (u32) temp8;
/* Point to the String */
buffer += 1;
/* Point the String pointer to the end of this structure */
output_struct->data.address16.resource_source.string_ptr =
(char *)((u8 * )output_struct + struct_size);
temp_ptr = (u8 *) output_struct->data.address16.resource_source.string_ptr;
/* Copy the string into the buffer */
index = 0;
while (0x00 != *buffer) {
*temp_ptr = *buffer;
temp_ptr += 1;
buffer += 1;
index += 1;
}
/*
* Add the terminating null
*/
*temp_ptr = 0x00;
output_struct->data.address16.resource_source.string_length = index + 1;
/*
* In order for the struct_size to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* struct_size to the next 32-bit boundary.
*/
temp8 = (u8) (index + 1);
struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
}
else {
output_struct->data.address16.resource_source.index = 0x00;
output_struct->data.address16.resource_source.string_length = 0;
output_struct->data.address16.resource_source.string_ptr = NULL;
}
/*
* 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_address16_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_address16_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer = *output_buffer;
u8 *length_field;
u8 temp8;
char *temp_pointer = NULL;
acpi_size actual_bytes;
ACPI_FUNCTION_TRACE ("rs_address16_stream");
/*
* The descriptor field is static
*/
*buffer = 0x88;
buffer += 1;
/*
* Save a pointer to the Length field - to be filled in later
*/
length_field = buffer;
buffer += 2;
/*
* Set the Resource Type (Memory, Io, bus_number)
*/
temp8 = (u8) (linked_list->data.address16.resource_type & 0x03);
*buffer = temp8;
buffer += 1;
/*
* Set the general flags
*/
temp8 = (u8) (linked_list->data.address16.producer_consumer & 0x01);
temp8 |= (linked_list->data.address16.decode & 0x01) << 1;
temp8 |= (linked_list->data.address16.min_address_fixed & 0x01) << 2;
temp8 |= (linked_list->data.address16.max_address_fixed & 0x01) << 3;
*buffer = temp8;
buffer += 1;
/*
* Set the type specific flags
*/
temp8 = 0;
if (ACPI_MEMORY_RANGE == linked_list->data.address16.resource_type) {
temp8 = (u8)
(linked_list->data.address16.attribute.memory.read_write_attribute &
0x01);
temp8 |=
(linked_list->data.address16.attribute.memory.cache_attribute &
0x03) << 1;
}
else if (ACPI_IO_RANGE == linked_list->data.address16.resource_type) {
temp8 = (u8)
(linked_list->data.address16.attribute.io.range_attribute &
0x03);
temp8 |=
(linked_list->data.address16.attribute.io.translation_attribute &
0x03) << 4;
}
*buffer = temp8;
buffer += 1;
/*
* Set the address space granularity
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.granularity);
buffer += 2;
/*
* Set the address range minimum
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.min_address_range);
buffer += 2;
/*
* Set the address range maximum
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.max_address_range);
buffer += 2;
/*
* Set the address translation offset
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.address_translation_offset);
buffer += 2;
/*
* Set the address length
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.address16.address_length);
buffer += 2;
/*
* Resource Source Index and Resource Source are optional
*/
if (0 != linked_list->data.address16.resource_source.string_length) {
temp8 = (u8) linked_list->data.address16.resource_source.index;
*buffer = temp8;
buffer += 1;
temp_pointer = (char *) buffer;
/*
* Copy the string
*/
ACPI_STRCPY (temp_pointer,
linked_list->data.address16.resource_source.string_ptr);
/*
* Buffer needs to be set to the length of the sting + one for the
* terminating null
*/
buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.address16.resource_source.string_ptr) + 1);
}
/*
* Return the number of bytes consumed in this operation
*/
actual_bytes = ACPI_PTR_DIFF (buffer, *output_buffer);
*bytes_consumed = actual_bytes;
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
actual_bytes -= 3;
ACPI_MOVE_SIZE_TO_16 (length_field, &actual_bytes);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address32_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_address32_resource (
u8 *byte_stream_buffer,
acpi_size *bytes_consumed,
u8 **output_buffer,
acpi_size *structure_size)
{
u8 *buffer;
struct acpi_resource *output_struct= (void *) *output_buffer;
u16 temp16;
u8 temp8;
u8 *temp_ptr;
acpi_size struct_size;
u32 index;
ACPI_FUNCTION_TRACE ("rs_address32_resource");
buffer = byte_stream_buffer;
struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address32);
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
/* Validate minimum descriptor length */
if (temp16 < 23) {
return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
}
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_ADDRESS32;
/*
* Get the Resource Type (Byte3)
*/
buffer += 2;
temp8 = *buffer;
/* Values 0-2 and 0xC0-0xFF are valid */
if ((temp8 > 2) && (temp8 < 0xC0)) {
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
}
output_struct->data.address32.resource_type = temp8;
/*
* Get the General Flags (Byte4)
*/
buffer += 1;
temp8 = *buffer;
/*
* Producer / Consumer
*/
output_struct->data.address32.producer_consumer = temp8 & 0x01;
/*
* Decode
*/
output_struct->data.address32.decode = (temp8 >> 1) & 0x01;
/*
* Min Address Fixed
*/
output_struct->data.address32.min_address_fixed = (temp8 >> 2) & 0x01;
/*
* Max Address Fixed
*/
output_struct->data.address32.max_address_fixed = (temp8 >> 3) & 0x01;
/*
* Get the Type Specific Flags (Byte5)
*/
buffer += 1;
temp8 = *buffer;
if (ACPI_MEMORY_RANGE == output_struct->data.address32.resource_type) {
output_struct->data.address32.attribute.memory.read_write_attribute =
(u16) (temp8 & 0x01);
output_struct->data.address32.attribute.memory.cache_attribute =
(u16) ((temp8 >> 1) & 0x03);
}
else {
if (ACPI_IO_RANGE == output_struct->data.address32.resource_type) {
output_struct->data.address32.attribute.io.range_attribute =
(u16) (temp8 & 0x03);
output_struct->data.address32.attribute.io.translation_attribute =
(u16) ((temp8 >> 4) & 0x03);
}
else {
/* BUS_NUMBER_RANGE == output_struct->Data.Address32.resource_type */
/* Nothing needs to be filled in */
}
}
/*
* Get Granularity (Bytes 6-9)
*/
buffer += 1;
ACPI_MOVE_32_TO_32 (&output_struct->data.address32.granularity, buffer);
/*
* Get min_address_range (Bytes 10-13)
*/
buffer += 4;
ACPI_MOVE_32_TO_32 (&output_struct->data.address32.min_address_range, buffer);
/*
* Get max_address_range (Bytes 14-17)
*/
buffer += 4;
ACPI_MOVE_32_TO_32 (&output_struct->data.address32.max_address_range, buffer);
/*
* Get address_translation_offset (Bytes 18-21)
*/
buffer += 4;
ACPI_MOVE_32_TO_32 (&output_struct->data.address32.address_translation_offset, buffer);
/*
* Get address_length (Bytes 22-25)
*/
buffer += 4;
ACPI_MOVE_32_TO_32 (&output_struct->data.address32.address_length, buffer);
/*
* Resource Source Index (if present)
*/
buffer += 4;
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*bytes_consumed > (26 + 1)) {
/* Dereference the Index */
temp8 = *buffer;
output_struct->data.address32.resource_source.index =
(u32) temp8;
/* Point to the String */
buffer += 1;
/* Point the String pointer to the end of this structure */
output_struct->data.address32.resource_source.string_ptr =
(char *)((u8 *)output_struct + struct_size);
temp_ptr = (u8 *) output_struct->data.address32.resource_source.string_ptr;
/* Copy the string into the buffer */
index = 0;
while (0x00 != *buffer) {
*temp_ptr = *buffer;
temp_ptr += 1;
buffer += 1;
index += 1;
}
/*
* Add the terminating null
*/
*temp_ptr = 0x00;
output_struct->data.address32.resource_source.string_length = index + 1;
/*
* In order for the struct_size to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* struct_size to the next 32-bit boundary.
*/
temp8 = (u8) (index + 1);
struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
}
else {
output_struct->data.address32.resource_source.index = 0x00;
output_struct->data.address32.resource_source.string_length = 0;
output_struct->data.address32.resource_source.string_ptr = NULL;
}
/*
* 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_address32_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_address32_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer;
u16 *length_field;
u8 temp8;
char *temp_pointer;
ACPI_FUNCTION_TRACE ("rs_address32_stream");
buffer = *output_buffer;
/*
* The descriptor field is static
*/
*buffer = 0x87;
buffer += 1;
/*
* Set a pointer to the Length field - to be filled in later
*/
length_field = ACPI_CAST_PTR (u16, buffer);
buffer += 2;
/*
* Set the Resource Type (Memory, Io, bus_number)
*/
temp8 = (u8) (linked_list->data.address32.resource_type & 0x03);
*buffer = temp8;
buffer += 1;
/*
* Set the general flags
*/
temp8 = (u8) (linked_list->data.address32.producer_consumer & 0x01);
temp8 |= (linked_list->data.address32.decode & 0x01) << 1;
temp8 |= (linked_list->data.address32.min_address_fixed & 0x01) << 2;
temp8 |= (linked_list->data.address32.max_address_fixed & 0x01) << 3;
*buffer = temp8;
buffer += 1;
/*
* Set the type specific flags
*/
temp8 = 0;
if (ACPI_MEMORY_RANGE == linked_list->data.address32.resource_type) {
temp8 = (u8)
(linked_list->data.address32.attribute.memory.read_write_attribute &
0x01);
temp8 |=
(linked_list->data.address32.attribute.memory.cache_attribute &
0x03) << 1;
}
else if (ACPI_IO_RANGE == linked_list->data.address32.resource_type) {
temp8 = (u8)
(linked_list->data.address32.attribute.io.range_attribute &
0x03);
temp8 |=
(linked_list->data.address32.attribute.io.translation_attribute &
0x03) << 4;
}
*buffer = temp8;
buffer += 1;
/*
* Set the address space granularity
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.granularity);
buffer += 4;
/*
* Set the address range minimum
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.min_address_range);
buffer += 4;
/*
* Set the address range maximum
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.max_address_range);
buffer += 4;
/*
* Set the address translation offset
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.address_translation_offset);
buffer += 4;
/*
* Set the address length
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.address32.address_length);
buffer += 4;
/*
* Resource Source Index and Resource Source are optional
*/
if (0 != linked_list->data.address32.resource_source.string_length) {
temp8 = (u8) linked_list->data.address32.resource_source.index;
*buffer = temp8;
buffer += 1;
temp_pointer = (char *) buffer;
/*
* Copy the string
*/
ACPI_STRCPY (temp_pointer,
linked_list->data.address32.resource_source.string_ptr);
/*
* Buffer needs to be set to the length of the sting + one for the
* terminating null
*/
buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.address32.resource_source.string_ptr) + 1);
}
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
*length_field = (u16) (*bytes_consumed - 3);
return_ACPI_STATUS (AE_OK);
}
/*******************************************************************************
*
* FUNCTION: acpi_rs_address64_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_address64_resource (
u8 *byte_stream_buffer,
acpi_size *bytes_consumed,
u8 **output_buffer,
acpi_size *structure_size)
{
u8 *buffer;
struct acpi_resource *output_struct = (void *) *output_buffer;
u16 temp16;
u8 temp8;
u8 resource_type;
u8 *temp_ptr;
acpi_size struct_size;
u32 index;
ACPI_FUNCTION_TRACE ("rs_address64_resource");
buffer = byte_stream_buffer;
struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_address64);
resource_type = *buffer;
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
/* Validate minimum descriptor length */
if (temp16 < 43) {
return_ACPI_STATUS (AE_AML_BAD_RESOURCE_LENGTH);
}
*bytes_consumed = temp16 + 3;
output_struct->id = ACPI_RSTYPE_ADDRESS64;
/*
* Get the Resource Type (Byte3)
*/
buffer += 2;
temp8 = *buffer;
/* Values 0-2 and 0xC0-0xFF are valid */
if ((temp8 > 2) && (temp8 < 0xC0)) {
return_ACPI_STATUS (AE_AML_INVALID_RESOURCE_TYPE);
}
output_struct->data.address64.resource_type = temp8;
/*
* Get the General Flags (Byte4)
*/
buffer += 1;
temp8 = *buffer;
/*
* Producer / Consumer
*/
output_struct->data.address64.producer_consumer = temp8 & 0x01;
/*
* Decode
*/
output_struct->data.address64.decode = (temp8 >> 1) & 0x01;
/*
* Min Address Fixed
*/
output_struct->data.address64.min_address_fixed = (temp8 >> 2) & 0x01;
/*
* Max Address Fixed
*/
output_struct->data.address64.max_address_fixed = (temp8 >> 3) & 0x01;
/*
* Get the Type Specific Flags (Byte5)
*/
buffer += 1;
temp8 = *buffer;
if (ACPI_MEMORY_RANGE == output_struct->data.address64.resource_type) {
output_struct->data.address64.attribute.memory.read_write_attribute =
(u16) (temp8 & 0x01);
output_struct->data.address64.attribute.memory.cache_attribute =
(u16) ((temp8 >> 1) & 0x03);
}
else {
if (ACPI_IO_RANGE == output_struct->data.address64.resource_type) {
output_struct->data.address64.attribute.io.range_attribute =
(u16) (temp8 & 0x03);
output_struct->data.address64.attribute.io.translation_attribute =
(u16) ((temp8 >> 4) & 0x03);
}
else {
/* BUS_NUMBER_RANGE == output_struct->Data.Address64.resource_type */
/* Nothing needs to be filled in */
}
}
if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
/* Move past revision_id and Reserved byte */
buffer += 2;
}
/*
* Get Granularity (Bytes 6-13) or (Bytes 8-15)
*/
buffer += 1;
ACPI_MOVE_64_TO_64 (&output_struct->data.address64.granularity, buffer);
/*
* Get min_address_range (Bytes 14-21) or (Bytes 16-23)
*/
buffer += 8;
ACPI_MOVE_64_TO_64 (&output_struct->data.address64.min_address_range, buffer);
/*
* Get max_address_range (Bytes 22-29) or (Bytes 24-31)
*/
buffer += 8;
ACPI_MOVE_64_TO_64 (&output_struct->data.address64.max_address_range, buffer);
/*
* Get address_translation_offset (Bytes 30-37) or (Bytes 32-39)
*/
buffer += 8;
ACPI_MOVE_64_TO_64 (&output_struct->data.address64.address_translation_offset, buffer);
/*
* Get address_length (Bytes 38-45) or (Bytes 40-47)
*/
buffer += 8;
ACPI_MOVE_64_TO_64 (&output_struct->data.address64.address_length, buffer);
output_struct->data.address64.resource_source.index = 0x00;
output_struct->data.address64.resource_source.string_length = 0;
output_struct->data.address64.resource_source.string_ptr = NULL;
if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
/* Get type_specific_attribute (Bytes 48-55) */
buffer += 8;
ACPI_MOVE_64_TO_64 (&output_struct->data.address64.type_specific_attributes, buffer);
}
else {
output_struct->data.address64.type_specific_attributes = 0;
/*
* Resource Source Index (if present)
*/
buffer += 8;
/*
* This will leave us pointing to the Resource Source Index
* If it is present, then save it off and calculate the
* pointer to where the null terminated string goes:
* Each Interrupt takes 32-bits + the 5 bytes of the
* stream that are default.
*
* Note: Some resource descriptors will have an additional null, so
* we add 1 to the length.
*/
if (*bytes_consumed > (46 + 1)) {
/* Dereference the Index */
temp8 = *buffer;
output_struct->data.address64.resource_source.index =
(u32) temp8;
/* Point to the String */
buffer += 1;
/* Point the String pointer to the end of this structure */
output_struct->data.address64.resource_source.string_ptr =
(char *)((u8 *)output_struct + struct_size);
temp_ptr = (u8 *) output_struct->data.address64.resource_source.string_ptr;
/* Copy the string into the buffer */
index = 0;
while (0x00 != *buffer) {
*temp_ptr = *buffer;
temp_ptr += 1;
buffer += 1;
index += 1;
}
/*
* Add the terminating null
*/
*temp_ptr = 0x00;
output_struct->data.address64.resource_source.string_length = index + 1;
/*
* In order for the struct_size to fall on a 32-bit boundary,
* calculate the length of the string and expand the
* struct_size to the next 32-bit boundary.
*/
temp8 = (u8) (index + 1);
struct_size += ACPI_ROUND_UP_to_32_bITS (temp8);
}
}
/*
* 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_address64_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_address64_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer;
u16 *length_field;
u8 temp8;
char *temp_pointer;
ACPI_FUNCTION_TRACE ("rs_address64_stream");
buffer = *output_buffer;
/*
* The descriptor field is static
*/
*buffer = 0x8A;
buffer += 1;
/*
* Set a pointer to the Length field - to be filled in later
*/
length_field = ACPI_CAST_PTR (u16, buffer);
buffer += 2;
/*
* Set the Resource Type (Memory, Io, bus_number)
*/
temp8 = (u8) (linked_list->data.address64.resource_type & 0x03);
*buffer = temp8;
buffer += 1;
/*
* Set the general flags
*/
temp8 = (u8) (linked_list->data.address64.producer_consumer & 0x01);
temp8 |= (linked_list->data.address64.decode & 0x01) << 1;
temp8 |= (linked_list->data.address64.min_address_fixed & 0x01) << 2;
temp8 |= (linked_list->data.address64.max_address_fixed & 0x01) << 3;
*buffer = temp8;
buffer += 1;
/*
* Set the type specific flags
*/
temp8 = 0;
if (ACPI_MEMORY_RANGE == linked_list->data.address64.resource_type) {
temp8 = (u8)
(linked_list->data.address64.attribute.memory.read_write_attribute &
0x01);
temp8 |=
(linked_list->data.address64.attribute.memory.cache_attribute &
0x03) << 1;
}
else if (ACPI_IO_RANGE == linked_list->data.address64.resource_type) {
temp8 = (u8)
(linked_list->data.address64.attribute.io.range_attribute &
0x03);
temp8 |=
(linked_list->data.address64.attribute.io.range_attribute &
0x03) << 4;
}
*buffer = temp8;
buffer += 1;
/*
* Set the address space granularity
*/
ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.granularity);
buffer += 8;
/*
* Set the address range minimum
*/
ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.min_address_range);
buffer += 8;
/*
* Set the address range maximum
*/
ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.max_address_range);
buffer += 8;
/*
* Set the address translation offset
*/
ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.address_translation_offset);
buffer += 8;
/*
* Set the address length
*/
ACPI_MOVE_64_TO_64 (buffer, &linked_list->data.address64.address_length);
buffer += 8;
/*
* Resource Source Index and Resource Source are optional
*/
if (0 != linked_list->data.address64.resource_source.string_length) {
temp8 = (u8) linked_list->data.address64.resource_source.index;
*buffer = temp8;
buffer += 1;
temp_pointer = (char *) buffer;
/*
* Copy the string
*/
ACPI_STRCPY (temp_pointer, linked_list->data.address64.resource_source.string_ptr);
/*
* Buffer needs to be set to the length of the sting + one for the
* terminating null
*/
buffer += (acpi_size)(ACPI_STRLEN (linked_list->data.address64.resource_source.string_ptr) + 1);
}
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
/*
* Set the length field to the number of bytes consumed
* minus the header size (3 bytes)
*/
*length_field = (u16) (*bytes_consumed - 3);
return_ACPI_STATUS (AE_OK);
}
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