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linux/drivers/acpi/resources/rsmemory.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

567 lines
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/*******************************************************************************
*
* Module Name: rsmem24 - Memory 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 ("rsmemory")
/*******************************************************************************
*
* FUNCTION: acpi_rs_memory24_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_memory24_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;
acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem24);
ACPI_FUNCTION_TRACE ("rs_memory24_resource");
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
*bytes_consumed = (acpi_size) temp16 + 3;
output_struct->id = ACPI_RSTYPE_MEM24;
/*
* Check Byte 3 the Read/Write bit
*/
temp8 = *buffer;
buffer += 1;
output_struct->data.memory24.read_write_attribute = temp8 & 0x01;
/*
* Get min_base_address (Bytes 4-5)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
output_struct->data.memory24.min_base_address = temp16;
/*
* Get max_base_address (Bytes 6-7)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
output_struct->data.memory24.max_base_address = temp16;
/*
* Get Alignment (Bytes 8-9)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
output_struct->data.memory24.alignment = temp16;
/*
* Get range_length (Bytes 10-11)
*/
ACPI_MOVE_16_TO_16 (&temp16, buffer);
output_struct->data.memory24.range_length = 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_memory24_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_memory24_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer = *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
ACPI_FUNCTION_TRACE ("rs_memory24_stream");
/*
* The descriptor field is static
*/
*buffer = 0x81;
buffer += 1;
/*
* The length field is static
*/
temp16 = 0x09;
ACPI_MOVE_16_TO_16 (buffer, &temp16);
buffer += 2;
/*
* Set the Information Byte
*/
temp8 = (u8) (linked_list->data.memory24.read_write_attribute & 0x01);
*buffer = temp8;
buffer += 1;
/*
* Set the Range minimum base address
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.min_base_address);
buffer += 2;
/*
* Set the Range maximum base address
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.max_base_address);
buffer += 2;
/*
* Set the base alignment
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.alignment);
buffer += 2;
/*
* Set the range length
*/
ACPI_MOVE_32_TO_16 (buffer, &linked_list->data.memory24.range_length);
buffer += 2;
/*
* 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_memory32_range_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_memory32_range_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;
acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_mem32);
ACPI_FUNCTION_TRACE ("rs_memory32_range_resource");
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
*bytes_consumed = (acpi_size) temp16 + 3;
output_struct->id = ACPI_RSTYPE_MEM32;
/*
* Point to the place in the output buffer where the data portion will
* begin.
* 1. Set the RESOURCE_DATA * Data to point to its own address, then
* 2. Set the pointer to the next address.
*
* NOTE: output_struct->Data is cast to u8, otherwise, this addition adds
* 4 * sizeof(RESOURCE_DATA) instead of 4 * sizeof(u8)
*/
/*
* Check Byte 3 the Read/Write bit
*/
temp8 = *buffer;
buffer += 1;
output_struct->data.memory32.read_write_attribute = temp8 & 0x01;
/*
* Get min_base_address (Bytes 4-7)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.min_base_address, buffer);
buffer += 4;
/*
* Get max_base_address (Bytes 8-11)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.max_base_address, buffer);
buffer += 4;
/*
* Get Alignment (Bytes 12-15)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.alignment, buffer);
buffer += 4;
/*
* Get range_length (Bytes 16-19)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.memory32.range_length, buffer);
/*
* 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_fixed_memory32_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_fixed_memory32_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;
acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_fixed_mem32);
ACPI_FUNCTION_TRACE ("rs_fixed_memory32_resource");
/*
* Point past the Descriptor to get the number of bytes consumed
*/
buffer += 1;
ACPI_MOVE_16_TO_16 (&temp16, buffer);
buffer += 2;
*bytes_consumed = (acpi_size) temp16 + 3;
output_struct->id = ACPI_RSTYPE_FIXED_MEM32;
/*
* Check Byte 3 the Read/Write bit
*/
temp8 = *buffer;
buffer += 1;
output_struct->data.fixed_memory32.read_write_attribute = temp8 & 0x01;
/*
* Get range_base_address (Bytes 4-7)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.fixed_memory32.range_base_address, buffer);
buffer += 4;
/*
* Get range_length (Bytes 8-11)
*/
ACPI_MOVE_32_TO_32 (&output_struct->data.fixed_memory32.range_length, buffer);
/*
* 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_memory32_range_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_memory32_range_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer = *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
ACPI_FUNCTION_TRACE ("rs_memory32_range_stream");
/*
* The descriptor field is static
*/
*buffer = 0x85;
buffer += 1;
/*
* The length field is static
*/
temp16 = 0x11;
ACPI_MOVE_16_TO_16 (buffer, &temp16);
buffer += 2;
/*
* Set the Information Byte
*/
temp8 = (u8) (linked_list->data.memory32.read_write_attribute & 0x01);
*buffer = temp8;
buffer += 1;
/*
* Set the Range minimum base address
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.min_base_address);
buffer += 4;
/*
* Set the Range maximum base address
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.max_base_address);
buffer += 4;
/*
* Set the base alignment
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.alignment);
buffer += 4;
/*
* Set the range length
*/
ACPI_MOVE_32_TO_32 (buffer, &linked_list->data.memory32.range_length);
buffer += 4;
/*
* 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_fixed_memory32_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_fixed_memory32_stream (
struct acpi_resource *linked_list,
u8 **output_buffer,
acpi_size *bytes_consumed)
{
u8 *buffer = *output_buffer;
u16 temp16 = 0;
u8 temp8 = 0;
ACPI_FUNCTION_TRACE ("rs_fixed_memory32_stream");
/*
* The descriptor field is static
*/
*buffer = 0x86;
buffer += 1;
/*
* The length field is static
*/
temp16 = 0x09;
ACPI_MOVE_16_TO_16 (buffer, &temp16);
buffer += 2;
/*
* Set the Information Byte
*/
temp8 = (u8) (linked_list->data.fixed_memory32.read_write_attribute & 0x01);
*buffer = temp8;
buffer += 1;
/*
* Set the Range base address
*/
ACPI_MOVE_32_TO_32 (buffer,
&linked_list->data.fixed_memory32.range_base_address);
buffer += 4;
/*
* Set the range length
*/
ACPI_MOVE_32_TO_32 (buffer,
&linked_list->data.fixed_memory32.range_length);
buffer += 4;
/*
* Return the number of bytes consumed in this operation
*/
*bytes_consumed = ACPI_PTR_DIFF (buffer, *output_buffer);
return_ACPI_STATUS (AE_OK);
}
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