mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 06:55:13 +08:00
1da177e4c3
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!
546 lines
15 KiB
C
546 lines
15 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: rsio - IO and DMA 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 ("rsio")
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_rs_io_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_io_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_io);
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("rs_io_resource");
|
|
|
|
|
|
/*
|
|
* The number of bytes consumed are Constant
|
|
*/
|
|
*bytes_consumed = 8;
|
|
|
|
output_struct->id = ACPI_RSTYPE_IO;
|
|
|
|
/*
|
|
* Check Decode
|
|
*/
|
|
buffer += 1;
|
|
temp8 = *buffer;
|
|
|
|
output_struct->data.io.io_decode = temp8 & 0x01;
|
|
|
|
/*
|
|
* Check min_base Address
|
|
*/
|
|
buffer += 1;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
output_struct->data.io.min_base_address = temp16;
|
|
|
|
/*
|
|
* Check max_base Address
|
|
*/
|
|
buffer += 2;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
output_struct->data.io.max_base_address = temp16;
|
|
|
|
/*
|
|
* Check Base alignment
|
|
*/
|
|
buffer += 2;
|
|
temp8 = *buffer;
|
|
|
|
output_struct->data.io.alignment = temp8;
|
|
|
|
/*
|
|
* Check range_length
|
|
*/
|
|
buffer += 1;
|
|
temp8 = *buffer;
|
|
|
|
output_struct->data.io.range_length = 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_fixed_io_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_io_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_io);
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("rs_fixed_io_resource");
|
|
|
|
|
|
/*
|
|
* The number of bytes consumed are Constant
|
|
*/
|
|
*bytes_consumed = 4;
|
|
|
|
output_struct->id = ACPI_RSTYPE_FIXED_IO;
|
|
|
|
/*
|
|
* Check Range Base Address
|
|
*/
|
|
buffer += 1;
|
|
ACPI_MOVE_16_TO_16 (&temp16, buffer);
|
|
|
|
output_struct->data.fixed_io.base_address = temp16;
|
|
|
|
/*
|
|
* Check range_length
|
|
*/
|
|
buffer += 2;
|
|
temp8 = *buffer;
|
|
|
|
output_struct->data.fixed_io.range_length = 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_io_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_io_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_io_stream");
|
|
|
|
|
|
/*
|
|
* The descriptor field is static
|
|
*/
|
|
*buffer = 0x47;
|
|
buffer += 1;
|
|
|
|
/*
|
|
* Io Information Byte
|
|
*/
|
|
temp8 = (u8) (linked_list->data.io.io_decode & 0x01);
|
|
|
|
*buffer = temp8;
|
|
buffer += 1;
|
|
|
|
/*
|
|
* Set the Range minimum base address
|
|
*/
|
|
temp16 = (u16) linked_list->data.io.min_base_address;
|
|
|
|
ACPI_MOVE_16_TO_16 (buffer, &temp16);
|
|
buffer += 2;
|
|
|
|
/*
|
|
* Set the Range maximum base address
|
|
*/
|
|
temp16 = (u16) linked_list->data.io.max_base_address;
|
|
|
|
ACPI_MOVE_16_TO_16 (buffer, &temp16);
|
|
buffer += 2;
|
|
|
|
/*
|
|
* Set the base alignment
|
|
*/
|
|
temp8 = (u8) linked_list->data.io.alignment;
|
|
|
|
*buffer = temp8;
|
|
buffer += 1;
|
|
|
|
/*
|
|
* Set the range length
|
|
*/
|
|
temp8 = (u8) linked_list->data.io.range_length;
|
|
|
|
*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_fixed_io_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_io_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_io_stream");
|
|
|
|
|
|
/*
|
|
* The descriptor field is static
|
|
*/
|
|
*buffer = 0x4B;
|
|
|
|
buffer += 1;
|
|
|
|
/*
|
|
* Set the Range base address
|
|
*/
|
|
temp16 = (u16) linked_list->data.fixed_io.base_address;
|
|
|
|
ACPI_MOVE_16_TO_16 (buffer, &temp16);
|
|
buffer += 2;
|
|
|
|
/*
|
|
* Set the range length
|
|
*/
|
|
temp8 = (u8) linked_list->data.fixed_io.range_length;
|
|
|
|
*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_dma_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_dma_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;
|
|
u8 index;
|
|
u8 i;
|
|
acpi_size struct_size = ACPI_SIZEOF_RESOURCE (struct acpi_resource_dma);
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("rs_dma_resource");
|
|
|
|
|
|
/*
|
|
* The number of bytes consumed are Constant
|
|
*/
|
|
*bytes_consumed = 3;
|
|
output_struct->id = ACPI_RSTYPE_DMA;
|
|
|
|
/*
|
|
* Point to the 8-bits of Byte 1
|
|
*/
|
|
buffer += 1;
|
|
temp8 = *buffer;
|
|
|
|
/* Decode the DMA channel bits */
|
|
|
|
for (i = 0, index = 0; index < 8; index++) {
|
|
if ((temp8 >> index) & 0x01) {
|
|
output_struct->data.dma.channels[i] = index;
|
|
i++;
|
|
}
|
|
}
|
|
|
|
/* Zero DMA channels is valid */
|
|
|
|
output_struct->data.dma.number_of_channels = i;
|
|
if (i > 0) {
|
|
/*
|
|
* Calculate the structure size based upon the number of interrupts
|
|
*/
|
|
struct_size += ((acpi_size) i - 1) * 4;
|
|
}
|
|
|
|
/*
|
|
* Point to Byte 2
|
|
*/
|
|
buffer += 1;
|
|
temp8 = *buffer;
|
|
|
|
/*
|
|
* Check for transfer preference (Bits[1:0])
|
|
*/
|
|
output_struct->data.dma.transfer = temp8 & 0x03;
|
|
|
|
if (0x03 == output_struct->data.dma.transfer) {
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid DMA.Transfer preference (3)\n"));
|
|
return_ACPI_STATUS (AE_BAD_DATA);
|
|
}
|
|
|
|
/*
|
|
* Get bus master preference (Bit[2])
|
|
*/
|
|
output_struct->data.dma.bus_master = (temp8 >> 2) & 0x01;
|
|
|
|
/*
|
|
* Get channel speed support (Bits[6:5])
|
|
*/
|
|
output_struct->data.dma.type = (temp8 >> 5) & 0x03;
|
|
|
|
/*
|
|
* 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_dma_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_dma_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_dma_stream");
|
|
|
|
|
|
/*
|
|
* The descriptor field is static
|
|
*/
|
|
*buffer = 0x2A;
|
|
buffer += 1;
|
|
temp8 = 0;
|
|
|
|
/*
|
|
* Loop through all of the Channels and set the mask bits
|
|
*/
|
|
for (index = 0;
|
|
index < linked_list->data.dma.number_of_channels;
|
|
index++) {
|
|
temp16 = (u16) linked_list->data.dma.channels[index];
|
|
temp8 |= 0x1 << temp16;
|
|
}
|
|
|
|
*buffer = temp8;
|
|
buffer += 1;
|
|
|
|
/*
|
|
* Set the DMA Info
|
|
*/
|
|
temp8 = (u8) ((linked_list->data.dma.type & 0x03) << 5);
|
|
temp8 |= ((linked_list->data.dma.bus_master & 0x01) << 2);
|
|
temp8 |= (linked_list->data.dma.transfer & 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);
|
|
}
|
|
|