xref: /kernel/linux/linux-6.6/Documentation/driver-api/tty/moxa-smartio.rst

=============================================================
MOXA Smartio/Industio Family Device Driver Installation Guide
=============================================================

Copyright (C) 2008, Moxa Inc.
Copyright (C) 2021, Jiri Slaby

.. Content

   1. Introduction
   2. System Requirement
   3. Installation
      3.1 Hardware installation
      3.2 Device naming convention
   4. Utilities
   5. Setserial
   6. Troubleshooting

1. Introduction
^^^^^^^^^^^^^^^

   The Smartio/Industio/UPCI family Linux driver supports following multiport
   boards:

    - 2 ports multiport board
	CP-102U, CP-102UL, CP-102UF
	CP-132U-I, CP-132UL,
	CP-132, CP-132I, CP132S, CP-132IS,
	(CP-102, CP-102S)

    - 4 ports multiport board
	CP-104EL,
	CP-104UL, CP-104JU,
	CP-134U, CP-134U-I,
	C104H/PCI, C104HS/PCI,
	CP-114, CP-114I, CP-114S, CP-114IS, CP-114UL,
	(C114HI, CT-114I),
	POS-104UL,
	CB-114,
	CB-134I

    - 8 ports multiport board
	CP-118EL, CP-168EL,
	CP-118U, CP-168U,
	C168H/PCI,
	CB-108

   If a compatibility problem occurs, please contact Moxa at
   support@moxa.com.tw.

   In addition to device driver, useful utilities are also provided in this
   version. They are:

    - msdiag
		 Diagnostic program for displaying installed Moxa
                 Smartio/Industio boards.
    - msmon
		 Monitor program to observe data count and line status signals.
    - msterm     A simple terminal program which is useful in testing serial
	         ports.

   All the drivers and utilities are published in form of source code under
   GNU General Public License in this version. Please refer to GNU General
   Public License announcement in each source code file for more detail.

   In Moxa's Web sites, you may always find the latest driver at
   https://www.moxa.com/.

   This version of driver can be installed as a Loadable Module (Module driver)
   or built-in into kernel (Static driver). Before you install the driver,
   please refer to hardware installation procedure in the User's Manual.

   We assume the user should be familiar with following documents:

   - Serial-HOWTO
   - Kernel-HOWTO

2. System Requirement
^^^^^^^^^^^^^^^^^^^^^

   - Maximum 4 boards can be installed in combination

3. Installation
^^^^^^^^^^^^^^^

3.1 Hardware installation
=========================

PCI/UPCI board
--------------

   You may need to adjust IRQ usage in BIOS to avoid IRQ conflict with other
   ISA devices. Please refer to hardware installation procedure in User's
   Manual in advance.

PCI IRQ Sharing
---------------

   Each port within the same multiport board shares the same IRQ. Up to
   4 Moxa Smartio/Industio PCI Family multiport boards can be installed
   together on one system and they can share the same IRQ.



3.2 Device naming convention
============================

   The device node is named "ttyMxx".

Device naming when more than 2 boards installed
-----------------------------------------------

   Naming convention for each Smartio/Industio multiport board is
   pre-defined as below.

   ============ ===============
   Board Num.	Device node
   1st board	ttyM0  - ttyM7
   2nd board	ttyM8  - ttyM15
   3rd board	ttyM16 - ttyM23
   4th board	ttyM24 - ttyM31
   ============ ===============

4. Utilities
^^^^^^^^^^^^

   There are 3 utilities contained in this driver. They are msdiag, msmon and
   msterm. These 3 utilities are released in form of source code. They should
   be compiled into executable file and copied into /usr/bin.

msdiag - Diagnostic
===================

   This utility provides the function to display what Moxa Smartio/Industio
   board was found by the driver in the system.

msmon - Port Monitoring
=======================

   This utility gives the user a quick view about all the MOXA ports'
   activities. One can easily learn each port's total received/transmitted
   (Rx/Tx) character count since the time when the monitoring is started.

   Rx/Tx throughputs per second are also reported in interval basis (e.g.
   the last 5 seconds) and in average basis (since the time the monitoring
   is started). You can reset all ports' count by <HOME> key. <+> <->
   (plus/minus) keys to change the displaying time interval. Press <ENTER>
   on the port, that cursor stay, to view the port's communication
   parameters, signal status, and input/output queue.

msterm - Terminal Emulation
===========================

   This utility provides data sending and receiving ability of all tty ports,
   especially for MOXA ports. It is quite useful for testing simple
   application, for example, sending AT command to a modem connected to the
   port or used as a terminal for login purpose. Note that this is only a
   dumb terminal emulation without handling full screen operation.

5. Setserial
^^^^^^^^^^^^

   Supported Setserial parameters are listed as below.

   ============== =============================================================
   uart		  set UART type(16450 --> disable FIFO, 16550A --> enable FIFO)
   close_delay	  set the amount of time (in 1/100 of a second) that DTR
		  should be kept low while being closed.
   closing_wait   set the amount of time (in 1/100 of a second) that the
		  serial port should wait for data to be drained while
		  being closed, before the receiver is disabled.
   spd_hi	  Use 57.6kb when the application requests 38.4kb.
   spd_vhi	  Use 115.2kb when the application requests 38.4kb.
   spd_shi	  Use 230.4kb when the application requests 38.4kb.
   spd_warp	  Use 460.8kb when the application requests 38.4kb.
   spd_normal	  Use 38.4kb when the application requests 38.4kb.
   spd_cust	  Use the custom divisor to set the speed when the
		  application requests 38.4kb.
   divisor	  This option sets the custom division.
   baud_base	  This option sets the base baud rate.
   ============== =============================================================

6. Troubleshooting
^^^^^^^^^^^^^^^^^^

   The boot time error messages and solutions are stated as clearly as
   possible. If all the possible solutions fail, please contact our technical
   support team to get more help.


   Error msg:
	      More than 4 Moxa Smartio/Industio family boards found. Fifth board
              and after are ignored.

   Solution:
   To avoid this problem, please unplug fifth and after board, because Moxa
   driver supports up to 4 boards.