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docs: mips: add to the documentation body as ReST
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Manually convert the AU1xxx_IDE.README file to ReST and add
to a MIPS book as part of the main documentation body.

Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Acked-by: Paul Burton <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
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mchehab authored and Jonathan Corbet committed Jul 31, 2019
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1 change: 1 addition & 0 deletions Documentation/index.rst
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Expand Up @@ -148,6 +148,7 @@ implementation.
ia64/index
m68k/index
powerpc/index
mips/index
openrisc/index
parisc/index
riscv/index
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README for MIPS AU1XXX IDE driver - Released 2005-07-15
.. include:: <isonum.txt>

======================
MIPS AU1XXX IDE driver
======================

Released 2005-07-15

About
=====

ABOUT
-----
This file describes the 'drivers/ide/au1xxx-ide.c', related files and the
services they provide.

Expand All @@ -10,17 +17,17 @@ the white or black list, go to the 'ADD NEW HARD DISC TO WHITE OR BLACK LIST'
section.


LICENSE
-------
License
=======

Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions
:Copyright: |copy| 2003-2005 AMD, Personal Connectivity Solutions

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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
THIS SOFTWARE IS PROVIDED ``AS IS`` AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Expand All @@ -35,31 +42,35 @@ 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.,
675 Mass Ave, Cambridge, MA 02139, USA.

Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
Note:
for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
Interface and Linux Device Driver" Application Note.


FILES, CONFIGS AND COMPATIBILITY
--------------------------------
Files, Configs and Compatibility
================================

Two files are introduced:

a) 'arch/mips/include/asm/mach-au1x00/au1xxx_ide.h'
contains : struct _auide_hwif
timing parameters for PIO mode 0/1/2/3/4
timing parameters for MWDMA 0/1/2

- timing parameters for PIO mode 0/1/2/3/4
- timing parameters for MWDMA 0/1/2

b) 'drivers/ide/mips/au1xxx-ide.c'
contains the functionality of the AU1XXX IDE driver

Following extra configs variables are introduced:

CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA - enable the PIO+DBDMA mode
CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA - enable the MWDMA mode
CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
- enable the PIO+DBDMA mode
CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
- enable the MWDMA mode


SUPPORTED IDE MODES
-------------------
Supported IDE Modes
===================

The AU1XXX IDE driver supported all PIO modes - PIO mode 0/1/2/3/4 - and all
MWDMA modes - MWDMA 0/1/2 -. There is no support for SWDMA and UDMA mode.
Expand All @@ -69,41 +80,44 @@ To change the PIO mode use the program hdparm with option -p, e.g.
-X, e.g. 'hdparm -X32 [device]' for MWDMA mode 0.


PERFORMANCE CONFIGURATIONS
--------------------------
Performance Configurations
==========================

If the used system doesn't need USB support enable the following kernel configs:
If the used system doesn't need USB support enable the following kernel
configs::

CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_IDE_AU1XXX=y
CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_IDE_AU1XXX=y
CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
CONFIG_BLK_DEV_IDEDMA=y

Also define 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to enable
the burst support on DBDMA controller.

If the used system need the USB support enable the following kernel configs for
high IDE to USB throughput.

CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_IDE_AU1XXX=y
CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
CONFIG_BLK_DEV_IDEDMA=y
::

CONFIG_IDE_GENERIC=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_IDE_AU1XXX=y
CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA=y
CONFIG_BLK_DEV_IDEDMA=y

Also undefine 'IDE_AU1XXX_BURSTMODE' in 'drivers/ide/mips/au1xxx-ide.c' to
disable the burst support on DBDMA controller.


ACKNOWLEDGMENTS
---------------
Acknowledgments
===============

These drivers wouldn't have been done without the base of kernel 2.4.x AU1XXX
IDE driver from AMD.
Expand All @@ -112,4 +126,5 @@ Additional input also from:
Matthias Lenk <[email protected]>

Happy hacking!

Enrico Walther <[email protected]>
17 changes: 17 additions & 0 deletions Documentation/mips/index.rst
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.. SPDX-License-Identifier: GPL-2.0
=================
MIPS architecture
=================

.. toctree::
:maxdepth: 2

au1xxx_ide

.. only:: subproject and html

Indices
=======

* :ref:`genindex`

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