FreeBSD/Linux Kernel Cross Reference
sys/Documentation/moxa-smartio

     =============================================================================
     
             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
    
    -----------------------------------------------------------------------------
    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
    
    -----------------------------------------------------------------------------
    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
    
    -----------------------------------------------------------------------------
    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/<driver directory>/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 bzImage                 /* take probably 10-20 minutes */
              d. Backup original boot kernel.                /* optional step */
              e. cp /usr/src/linux/arch/i386/boot/bzImage /boot/vmlinuz
              f. 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).
              g. chmod 400 /vmlinuz
              h. lilo
              i. rdev -R /vmlinuz 1
              j. 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.
   -----------------------------------------------------------------------------
   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 <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 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.
   
   -----------------------------------------------------------------------------
   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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