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docs: networking: move AppleTalk / LocalTalk drivers to the hw driver section

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Move docs for cops and ltpc under device_drivers/appletalk.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
2020-06-26 10:27:29 -07:00
committed by David S. Miller
parent 95298d63c6
commit 4daedf7abb
6 changed files with 22 additions and 3 deletions
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80
Documentation/networking/device_drivers/appletalk/cops.rst Normal file
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.. SPDX-License-Identifier: GPL-2.0
========================================
The COPS LocalTalk Linux driver (cops.c)
========================================
By Jay Schulist <jschlst@samba.org>
This driver has two modes and they are: Dayna mode and Tangent mode.
Each mode corresponds with the type of card. It has been found
that there are 2 main types of cards and all other cards are
the same and just have different names or only have minor differences
such as more IO ports. As this driver is tested it will
become more clear exactly what cards are supported.
Right now these cards are known to work with the COPS driver. The
LT-200 cards work in a somewhat more limited capacity than the
DL200 cards, which work very well and are in use by many people.
TANGENT driver mode:
- Tangent ATB-II, Novell NL-1000, Daystar Digital LT-200
DAYNA driver mode:
- Dayna DL2000/DaynaTalk PC (Half Length), COPS LT-95,
- Farallon PhoneNET PC III, Farallon PhoneNET PC II
Other cards possibly supported mode unknown though:
- Dayna DL2000 (Full length)
The COPS driver defaults to using Dayna mode. To change the driver's
mode if you built a driver with dual support use board_type=1 or
board_type=2 for Dayna or Tangent with insmod.
Operation/loading of the driver
===============================
Use modprobe like this: /sbin/modprobe cops.o (IO #) (IRQ #)
If you do not specify any options the driver will try and use the IO = 0x240,
IRQ = 5. As of right now I would only use IRQ 5 for the card, if autoprobing.
To load multiple COPS driver Localtalk cards you can do one of the following::
insmod cops io=0x240 irq=5
insmod -o cops2 cops io=0x260 irq=3
Or in lilo.conf put something like this::
append="ether=5,0x240,lt0 ether=3,0x260,lt1"
Then bring up the interface with ifconfig. It will look something like this::
lt0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-F7-00-00-00-00-00-00-00-00
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING NOARP MULTICAST MTU:600 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 coll:0
Netatalk Configuration
======================
You will need to configure atalkd with something like the following to make
it work with the cops.c driver.
* For single LTalk card use::
dummy -seed -phase 2 -net 2000 -addr 2000.10 -zone "1033"
lt0 -seed -phase 1 -net 1000 -addr 1000.50 -zone "1033"
* For multiple cards, Ethernet and LocalTalk::
eth0 -seed -phase 2 -net 3000 -addr 3000.20 -zone "1033"
lt0 -seed -phase 1 -net 1000 -addr 1000.50 -zone "1033"
* For multiple LocalTalk cards, and an Ethernet card.
* Order seems to matter here, Ethernet last::
lt0 -seed -phase 1 -net 1000 -addr 1000.10 -zone "LocalTalk1"
lt1 -seed -phase 1 -net 2000 -addr 2000.20 -zone "LocalTalk2"
eth0 -seed -phase 2 -net 3000 -addr 3000.30 -zone "EtherTalk"

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Documentation/networking/device_drivers/appletalk/index.rst Normal file
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.. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
AppleTalk Device Drivers
========================
Contents:
.. toctree::
:maxdepth: 2
cops
ltpc
.. only:: subproject and html
Indices
=======
* :ref:`genindex`

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Documentation/networking/device_drivers/appletalk/ltpc.rst Normal file
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.. SPDX-License-Identifier: GPL-2.0
===========
LTPC Driver
===========
This is the ALPHA version of the ltpc driver.
In order to use it, you will need at least version 1.3.3 of the
netatalk package, and the Apple or Farallon LocalTalk PC card.
There are a number of different LocalTalk cards for the PC; this
driver applies only to the one with the 65c02 processor chip on it.
To include it in the kernel, select the CONFIG_LTPC switch in the
configuration dialog. You can also compile it as a module.
While the driver will attempt to autoprobe the I/O port address, IRQ
line, and DMA channel of the card, this does not always work. For
this reason, you should be prepared to supply these parameters
yourself. (see "Card Configuration" below for how to determine or
change the settings on your card)
When the driver is compiled into the kernel, you can add a line such
as the following to your /etc/lilo.conf::
append="ltpc=0x240,9,1"
where the parameters (in order) are the port address, IRQ, and DMA
channel. The second and third values can be omitted, in which case
the driver will try to determine them itself.
If you load the driver as a module, you can pass the parameters "io=",
"irq=", and "dma=" on the command line with insmod or modprobe, or add
them as options in a configuration file in /etc/modprobe.d/ directory::
alias lt0 ltpc # autoload the module when the interface is configured
options ltpc io=0x240 irq=9 dma=1
Before starting up the netatalk demons (perhaps in rc.local), you
need to add a line such as::
/sbin/ifconfig lt0 127.0.0.42
The address is unimportant - however, the card needs to be configured
with ifconfig so that Netatalk can find it.
The appropriate netatalk configuration depends on whether you are
attached to a network that includes AppleTalk routers or not. If,
like me, you are simply connecting to your home Macintoshes and
printers, you need to set up netatalk to "seed". The way I do this
is to have the lines::
dummy -seed -phase 2 -net 2000 -addr 2000.26 -zone "1033"
lt0 -seed -phase 1 -net 1033 -addr 1033.27 -zone "1033"
in my atalkd.conf. What is going on here is that I need to fool
netatalk into thinking that there are two AppleTalk interfaces
present; otherwise, it refuses to seed. This is a hack, and a more
permanent solution would be to alter the netatalk code. Also, make
sure you have the correct name for the dummy interface - If it's
compiled as a module, you will need to refer to it as "dummy0" or some
such.
If you are attached to an extended AppleTalk network, with routers on
it, then you don't need to fool around with this -- the appropriate
line in atalkd.conf is::
lt0 -phase 1
Card Configuration
==================
The interrupts and so forth are configured via the dipswitch on the
board. Set the switches so as not to conflict with other hardware.
Interrupts -- set at most one. If none are set, the driver uses
polled mode. Because the card was developed in the XT era, the
original documentation refers to IRQ2. Since you'll be running
this on an AT (or later) class machine, that really means IRQ9.
=== ===========================================================
SW1 IRQ 4
SW2 IRQ 3
SW3 IRQ 9 (2 in original card documentation only applies to XT)
=== ===========================================================
DMA -- choose DMA 1 or 3, and set both corresponding switches.
=== =====
SW4 DMA 3
SW5 DMA 1
SW6 DMA 3
SW7 DMA 1
=== =====
I/O address -- choose one.
=== =========
SW8 220 / 240
=== =========
IP
==
Yes, it is possible to do IP over LocalTalk. However, you can't just
treat the LocalTalk device like an ordinary Ethernet device, even if
that's what it looks like to Netatalk.
Instead, you follow the same procedure as for doing IP in EtherTalk.
See Documentation/networking/ipddp.rst for more information about the
kernel driver and userspace tools needed.
Bugs
====
IRQ autoprobing often doesn't work on a cold boot. To get around
this, either compile the driver as a module, or pass the parameters
for the card to the kernel as described above.
Also, as usual, autoprobing is not recommended when you use the driver
as a module. (though it usually works at boot time, at least)
Polled mode is *really* slow sometimes, but this seems to depend on
the configuration of the network.
It may theoretically be possible to use two LTPC cards in the same
machine, but this is unsupported, so if you really want to do this,
you'll probably have to hack the initialization code a bit.
Thanks
======
Thanks to Alan Cox for helpful discussions early on in this
work, and to Denis Hainsworth for doing the bleeding-edge testing.
Bradford Johnson <bradford@math.umn.edu>
Updated 11/09/1998 by David Huggins-Daines <dhd@debian.org>

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Documentation/networking/device_drivers/index.rst
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.. toctree::
:maxdepth: 2
appletalk/index
cable/index
cellular/index
ethernet/index