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        MOXA Smartio Family Device Driver Ver 1.1 Installation Guide

                    for Linux Kernel 2.2.x and 2.0.3x

               Copyright (C) 1999, Moxa Technologies Co, Ltd.

=============================================================================

Content

1. Introduction

2. System Requirement

3. Installation

4. Utilities

5. Setserial

6. Troubleshooting

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1. Introduction

   The Smartio family Linux driver, Ver. 1.1, supports following multiport

   boards.

    -C104P/H/HS, C104H/PCI, C104HS/PCI, CI-104J 4 port multiport board.

    -C168P/H/HS, C168H/PCI 8 port multiport board.

   This driver has been modified a little and cleaned up from the Moxa

   contributed driver code and merged into Linux 2.2.14pre. In particular

   official major/minor numbers have been assigned which are different to

   those the original Moxa supplied driver used.

   This driver and installation procedure have been developed upon Linux Kernel

   2.2.5 and backward compatible to 2.0.3x. This driver supports Intel x86 and

   Alpha hardware platform. In order to maintain compatibility, this version

   has also been properly tested with RedHat, OpenLinux, TurboLinux and

   S.u.S.E Linux. However, if 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 detecting installed Moxa Smartio boards.

    - msmon      Monitor program to observe data count and line status signals.

    - msterm     A simple terminal program which is useful in testing serial

                 ports.

    - io-irq.exe Configuration program to setup ISA boards. Please note that

                 this program can only be executed under DOS.

   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 ftp sites, you may always find latest driver at

   ftp://ftp.moxa.com  or ftp://ftp.moxa.com.tw.

   This version of driver can be installed as Loadable Module (Module driver)

   or built-in into kernel (Static driver). You may refer to following

   installation procedure for suitable one. 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

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2. System Requirement

   - Hardware platform: Intel x86 or Alpha machine

   - Kernel version: 2.0.3x or 2.2.x

   - gcc version 2.72 or later

   - Maximum 4 boards can be installed in combination

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3. Installation

   3.1 Hardware installation

       There are two types of buses, ISA and PCI, for Smartio family multiport

       board.

       ISA board

       ---------

       You'll have to configure CAP address, I/O address, Interrupt Vector

       as well as IRQ before installing this driver. Please refer to hardware

       installation procedure in User's Manual before proceed any further.

       Please make sure the JP1 is open after the ISA board is set properly.

       PCI board

       ---------

       You may need to adjust IRQ usage in BIOS to avoid from IRQ conflict

       with other ISA devices. Please refer to hardware installation

       procedure in User's Manual in advance.

       IRQ Sharing

       -----------

       Each port within the same multiport board shares the same IRQ. Up to

       4 Moxa Smartio Family multiport boards can be installed together on

       one system and they can share the same IRQ.

   3.2 Driver files and device naming convention

       The driver file may be obtained from ftp, CD-ROM or floppy disk. The

       first step, anyway, is to copy driver file "mxser.tgz" into specified

       directory. e.g. /moxa. The execute commands as below.

       # cd /moxa

       # tar xvf /dev/fd0

       or

       # cd /moxa

       # cp /mnt/cdrom//mxser.tgz .

       # tar xvfz mxser.tgz

       You may find all the driver and utilities files in /moxa/mxser.

       Following installation procedure depends on the model you'd like to

       run the driver. If you prefer module driver, please refer to 3.3.

       If static driver is required, please refer to 3.4.

       Dialin and callout port

       -----------------------

       This driver remains traditional serial device properties. There're

       two special file name for each serial port. One is dial-in port

       which is named "ttyMxx". For callout port, the naming convention

       is "cumxx".

       Device naming when more than 2 boards installed

       -----------------------------------------------

       Naming convention for each Smartio multiport board is pre-defined

       as below.

       Board Num.        Dial-in Port         Callout port

       1st board        ttyM0  - ttyM7        cum0  - cum7

       2nd board        ttyM8  - ttyM15       cum8  - cum15

       3rd board        ttyM16 - ttyM23       cum16 - cum23

       4th board        ttyM24 - ttym31       cum24 - cum31

       Board sequence

       --------------

       This driver will activate ISA boards according to the parameter set

       in the driver. After all specified ISA board activated, PCI board

       will be installed in the system automatically driven.

       Therefore the board number is sorted by the CAP address of ISA boards.

       For PCI boards, their sequence will be after ISA boards and C168H/PCI

       has higher priority than C104H/PCI boards.

   3.3 Module driver configuration

       Module driver is easiest way to install. If you prefer static driver

       installation, please skip this paragraph.

       1. Find "Makefile" in /moxa/mxser, then run

          # make install

          The driver files "mxser.o" and utilities will be properly compiled

          and copied to system directories respectively.Then run

          # insmod mxser

          to activate the modular driver. You may run "lsmod" to check

          if "mxser.o" is activated.

       2. Create special files by executing "msmknod".

          # cd /moxa/mxser/driver

          # ./msmknod

          Default major numbers for dial-in device and callout device are

          174, 175. Msmknod will delete any special files occupying the same

          device naming.

       3. Up to now, you may manually execute "insmod mxser" to activate

          this driver and run "rmmod mxser" to remove it. However, it's

          better to have a boot time configuration to eliminate manual

          operation.

          Boot time configuration can be achieved by rc file. Run following

          command for setting rc files.

          # cd /moxa/mxser/driver

          # cp ./rc.mxser /etc/rc.d

          # cd /etc/rc.d

          You may have to modify part of the content in rc.mxser to specify

          parameters for ISA board. Please refer to rc.mxser for more detail.

          Find "rc.serial". If "rc.serial" doesn't exist, create it by vi.

          Add "rc.mxser" in last line. Next, open rc.local by vi

          and append following content.

          if [ -f /etc/rc.d/rc.serial ]; then

             sh /etc/rc.d/rc.serial

          fi

       4. Reboot and check if mxser.o activated by "lsmod" command.

       5. If you'd like to drive Smartio ISA boards in the system, you'll

          have to add parameter to specify CAP address of given board while

          activating "mxser.o". The format for parameters are as follows.

          insmod mxser ioaddr=0x???,0x???,0x???,0x???

                                |      |     |    |

                                |      |     |    +- 4th ISA board

                                |      |     +------ 3rd ISA board

                                |      +------------ 2nd ISA board

                                +------------------- 1st ISA board

   3.4 Static driver configuration

       1. Create link

          # cd /usr/src/linux/drivers/char

          # ln -s /moxa/mxser/driver/mxser.c mxser.c

       2. Add CAP address list for ISA boards

          In module mode, the CAP address for ISA board is given by

          parameter. In static driver configuration, you'll have to

          assign it within driver's source code. If you will not

          install any ISA boards, you may skip to next portion.

          The instructions to modify driver source code are as

          below.

          a. # cd /moxa/mxser/driver

             # vi mxser.c

          b. Find the array mxserBoardCAP[] as below.

             static int mxserBoardCAP[]

             = {0x00, 0x00, 0x00, 0x00};

          c. Change the address within this array using vi. For

             example, to driver 2 ISA boards with CAP address

             0x280 and 0x180 as 1st and 2nd board. Just to change

             the source code as follows.

             static int mxserBoardCAP[]

             = {0x280, 0x180, 0x00, 0x00};

       3. Modify tty_io.c

          # cd /usr/src/linux/drivers/char/

          # vi tty_io.c

            Find pty_init(), insert "mxser_init()" as

            pty_init();

            mxser_init();

       4. Modify tty.h

          # cd /usr/src/linux/include/linux

          # vi tty.h

            Find extern int tty_init(void), insert "mxser_init()" as

            extern int tty_init(void);

            extern int mxser_init(void);

       5. Modify Makefile

          # cd /usr/src/linux/drivers/char

          # vi Makefile

            Find L_OBJS := tty_io.o ...... random.o, add

            "mxser.o" at last of this line as

            L_OBJS := tty_io.o ....... mxser.o

       6. Rebuild kernel

          The following are for Linux kernel rebuilding,for your reference only.

          For appropriate details, please refer to the Linux document.

          If 'lilo' utility is installed, please use 'make zlilo' to rebuild

          kernel. If 'lilo' is not installed, please follow the following steps.

           a. cd /usr/src/linux

           b. make clean                             /* take a few minutes */

           c. make dep                               /* take a few minutes */

           d. make bzImage                 /* take probably 10-20 minutes */

           e. Backup original boot kernel.                /* optional step */

           f. cp /usr/src/linux/arch/i386/boot/bzImage /boot/vmlinuz

           g. Please make sure the boot kernel (vmlinuz) is in the

              correct position. If you use 'lilo' utility, you should

              check /etc/lilo.conf 'image' item specified the path

              which is the 'vmlinuz' path, or you will load wrong

              (or old) boot kernel image (vmlinuz).

           h. chmod 400 /vmlinuz

           i. lilo

           j. rdev -R /vmlinuz 1

           k. sync

          Note that if the result of "make zImage" is ERROR, then you have to

          go back to Linux configuration Setup. Type "make config" in directory

          /usr/src/linux or "setup".

          Since system include file, /usr/src/linux/include/linux/interrupt.h,

          is modified each time the MOXA driver is installed, kernel rebuilding

          is inevitable. And it takes about 10 to 20 minutes depends on the

          machine.

       7. Make utility

          # cd /moxa/mxser/utility

          # make install

       8. Make special file

          # cd /moxa/mxser/driver

          # ./msmknod

       9. Reboot

   3.5 Custom configuration

       Although this driver already provides you default configuration, you

       still can change the device name and major number.The instruction to

       change these parameters are shown as below.

       Change Device name

       ------------------

       If you'd like to use other device names instead of default naming

       convention, all you have to do is to modify the internal code

       within the shell script "msmknod". First, you have to open "msmknod"

       by vi. Locate each line contains "ttyM" and "cum" and change them

       to the device name you desired. "msmknod" creates the device names

       you need next time executed.

       Change Major number

       -------------------

       If major number 30 and 35 had been occupied, you may have to select

       2 free major numbers for this driver. There are 3 steps to change

       major numbers.

       1. Find free major numbers

          In /proc/devices, you may find all the major numbers occupied

          in the system. Please select 2 major numbers that are available.

          e.g. 40, 45.

       2. Create special files

          Run /moxa/mxser/driver/msmknod to create special files with

          specified major numbers.

       3. Modify driver with new major number

          Run vi to open /moxa/mxser/driver/mxser.c. Locate the line

          contains "MXSERMAJOR". Change the content as below.

          #define         MXSERMAJOR              40

          #define         MXSERCUMAJOR            45

       4. Run # make install in /moxa/mxser/driver.

   3.6 Verify driver installation

       You may refer to /var/log/messages to check the latest status

       log reported by this driver whenever it's activated.

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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 detect what Moxa Smartio multiport

   board exists 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  key. <+> <->

   (plus/minus) keys to change the displaying time interval. Press 

   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.

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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 disable.

   spd_hi         Use  57.6kb  when  the application requests 38.4kb.

   spd_vhi        Use  115.2kb  when  the application requests 38.4kb.

   spd_normal     Use  38.4kb  when  the application requests 38.4kb.

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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 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.

   Error msg: Request_irq fail, IRQ(?) may be conflict with another device.

   Solution:

   Other PCI or ISA devices occupy the assigned IRQ. If you are not sure

   which device causes the situation,please check /proc/interrupts to find

   free IRQ and simply change another free IRQ for Moxa board.

   Error msg: Board #: C1xx Series(CAP=xxx) interrupt number invalid.

   Solution:

   Each port within the same multiport board shares the same IRQ. Please set

   one IRQ (IRQ doesn't equal to zero) for one Moxa board.

   Error msg: No interrupt vector be set for Moxa ISA board(CAP=xxx).

   Solution:

   Moxa ISA board needs an interrupt vector.Please refer to user's manual

   "Hardware Installation" chapter to set interrupt vector.

   Error msg: Couldn't install MOXA Smartio family driver!

   Solution:

   Load Moxa driver fail, the major number may conflict with other devices.

   Please refer to previous section 3.5 to change a free major number for

   Moxa driver.

   Error msg: Couldn't install MOXA Smartio family callout driver!

   Solution:

   Load Moxa callout driver fail, the callout device major number may

   conflict with other devices. Please refer to previous section 3.5 to

   change a free callout device major number for Moxa driver.

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