Create/use more directory structure in the Documentation/ tree.

Create Documentation/blockdev/ sub-directory and populate it.
Populate the Documentation/serial/ sub-directory.
Move MSI-HOWTO.txt to Documentation/PCI/.
Move ioctl-number.txt to Documentation/ioctl/.
Update all relevant 00-INDEX files.
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Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>

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+=============================================================================
+          MOXA Smartio/Industio Family Device Driver Installation Guide
+                    for Linux Kernel 2.4.x, 2.6.x
+               Copyright (C) 2008, Moxa Inc.
+=============================================================================
+Date: 01/21/2008
+
+Content
+
+1. Introduction
+2. System Requirement
+3. Installation
+   3.1 Hardware installation
+   3.2 Driver files
+   3.3 Device naming convention
+   3.4 Module driver configuration
+   3.5 Static driver configuration for Linux kernel 2.4.x and 2.6.x.
+   3.6 Custom configuration
+   3.7 Verify driver installation
+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,
+        CI-132, CI-132I, CI-132IS,
+        (C102H, C102HI, C102HIS, C102P, 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,
+        C104H, C104HS,
+        CI-104J, CI-104JS,
+        CI-134, CI-134I, CI-134IS,
+        (C114HI, CT-114I, C104P)
+        POS-104UL,
+        CB-114,
+        CB-134I
+
+    - 8 ports multiport board
+        CP-118EL, CP-168EL,
+        CP-118U, CP-168U,
+        C168H/PCI,
+        C168H, C168HS,
+        (C168P),
+        CB-108
+
+   This driver and installation procedure have been developed upon Linux Kernel
+   2.4.x and 2.6.x. This driver supports Intel x86 hardware platform. In order
+   to maintain compatibility, this version has also been properly tested with
+   RedHat, Mandrake, Fedora 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 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.
+    - 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 Web sites, you may always find latest driver at http://web.moxa.com.
+
+   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 machine
+   - Kernel version: 2.4.x or 2.6.x
+   - gcc version 2.72 or later
+   - Maximum 4 boards can be installed in combination
+
+-----------------------------------------------------------------------------
+3. Installation
+
+   3.1 Hardware installation
+   3.2 Driver files
+   3.3 Device naming convention
+   3.4 Module driver configuration
+   3.5 Static driver configuration for Linux kernel 2.4.x, 2.6.x.
+   3.6 Custom configuration
+   3.7 Verify driver installation
+
+
+   3.1 Hardware installation
+
+       There are two types of buses, ISA and PCI, for Smartio/Industio
+       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/UPCI 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.
+
+       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 Driver files
+
+       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 /
+       # mkdir moxa
+       # cd /moxa
+       # tar xvf /dev/fd0
+
+       or
+
+       # cd /
+       # mkdir moxa
+       # cd /moxa
+       # cp /mnt/cdrom/<driver directory>/mxser.tgz .
+       # tar xvfz mxser.tgz
+
+
+   3.3 Device naming convention
+
+       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 3.4.
+       If static driver is required, please refer to 3.5.
+
+       Dialin and callout port
+       -----------------------
+       This driver remains traditional serial device properties. There are
+       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/Industio 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
+
+
+       !!!!!!!!!!!!!!!!!!!! NOTE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+       Under Kernel 2.6 the cum Device is Obsolete. So use ttyM*
+       device instead.
+       !!!!!!!!!!!!!!!!!!!! NOTE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+       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.
+
+   3.4 Module driver configuration
+       Module driver is easiest way to install. If you prefer static driver
+       installation, please skip this paragraph.
+
+
+       ------------- Prepare to use the MOXA driver--------------------
+       3.4.1 Create tty device with correct major number
+          Before using MOXA driver, your system must have the tty devices
+          which are created with driver's major number. We offer one shell
+          script "msmknod" to simplify the procedure.
+          This step is only needed to be executed once. But you still
+          need to do this procedure when:
+          a. You change the driver's major number. Please refer the "3.7"
+             section.
+          b. Your total installed MOXA boards number is changed. Maybe you
+             add/delete one MOXA board.
+          c. You want to change the tty name. This needs to modify the
+             shell script "msmknod"
+
+          The procedure is:
+          # cd /moxa/mxser/driver
+          # ./msmknod
+
+          This shell script will require the major number for dial-in
+          device and callout device to create tty device. You also need
+          to specify the total installed MOXA board number. Default major
+          numbers for dial-in device and callout device are 30, 35. If
+          you need to change to other number, please refer section "3.7"
+          for more detailed procedure.
+          Msmknod will delete any special files occupying the same device
+          naming.
+
+       3.4.2 Build the MOXA driver and utilities
+          Before using the MOXA driver and utilities, you need compile the
+          all the source code. This step is only need to be executed once.
+          But you still re-compile the source code if you modify the source
+          code. For example, if you change the driver's major number (see
+          "3.7" section), then you need to do this step again.
+
+          Find "Makefile" in /moxa/mxser, then run
+
+          # make clean; make install
+
+          !!!!!!!!!! NOTE !!!!!!!!!!!!!!!!!
+          For Red Hat 9, Red Hat Enterprise Linux AS3/ES3/WS3 & Fedora Core1:
+          # make clean; make installsp1
+
+          For Red Hat Enterprise Linux AS4/ES4/WS4:
+          # make clean; make installsp2
+          !!!!!!!!!! NOTE !!!!!!!!!!!!!!!!!
+
+          The driver files "mxser.o" and utilities will be properly compiled
+          and copied to system directories respectively.
+
+       ------------- Load MOXA driver--------------------
+       3.4.3 Load the MOXA driver
+
+          # modprobe mxser <argument>
+
+          will activate the module driver. You may run "lsmod" to check
+          if "mxser" is activated. If the MOXA board is ISA board, the
+          <argument> is needed. Please refer to section "3.4.5" for more
+          information.
+
+
+       ------------- Load MOXA driver on boot --------------------
+       3.4.4 For the above description, you may manually execute
+          "modprobe 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. We offer one "rc.mxser" file to simplify
+          the procedure under "moxa/mxser/driver".
+
+          But if you use ISA board, please modify the "modprobe ..." command
+          to add the argument (see "3.4.5" section). After modifying the
+          rc.mxser, please try to execute "/moxa/mxser/driver/rc.mxser"
+          manually to make sure the modification is ok. If any error
+          encountered, please try to modify again. If the modification is
+          completed, follow the below step.
+
+          Run following command for setting rc files.
+
+          # cd /moxa/mxser/driver
+          # cp ./rc.mxser /etc/rc.d
+          # cd /etc/rc.d
+
+          Check "rc.serial" is existed or not. If "rc.serial" doesn't exist,
+          create it by vi, run "chmod 755 rc.serial" to change the permission.
+          Add "/etc/rc.d/rc.mxser" in last line,
+
+          Reboot and check if moxa.o activated by "lsmod" command.
+
+       3.4.5. If you'd like to drive Smartio/Industio 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.
+
+          modprobe mxser ioaddr=0x???,0x???,0x???,0x???
+                                |      |     |    |
+                                |      |     |    +- 4th ISA board
+                                |      |     +------ 3rd ISA board
+                                |      +------------ 2nd ISA board
+                                +------------------- 1st ISA board
+
+   3.5 Static driver configuration for Linux kernel 2.4.x and 2.6.x
+
+       Note: To use static driver, you must install the linux kernel
+             source package.
+
+       3.5.1 Backup the built-in driver in the kernel.
+          # cd /usr/src/linux/drivers/char
+          # mv mxser.c mxser.c.old
+
+          For Red Hat 7.x user, you need to create link:
+          # cd /usr/src
+          # ln -s linux-2.4 linux
+
+       3.5.2 Create link
+          # cd /usr/src/linux/drivers/char
+          # ln -s /moxa/mxser/driver/mxser.c mxser.c
+
+       3.5.3 Add CAP address list for ISA boards. For PCI boards user,
+          please skip this step.
+
+          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};
+
+       3.5.4 Setup kernel configuration
+
+          Configure the kernel:
+
+            # cd /usr/src/linux
+            # make menuconfig
+
+          You will go into a menu-driven system. Please select [Character
+          devices][Non-standard serial port support], enable the [Moxa
+          SmartIO support] driver with "[*]" for built-in (not "[M]"), then
+          select [Exit] to exit this program.
+
+       3.5.5 Rebuild kernel
+          The following are for Linux kernel rebuilding, for your
+          reference only.
+          For appropriate details, please refer to the Linux document.
+
+           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. make install           /* copy boot image to correct position */
+           f. Please make sure the boot kernel (vmlinuz) is in the
+              correct position.
+           g. 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).
+              After checking /etc/lilo.conf, please run "lilo".
+
+          Note that if the result of "make bzImage" is ERROR, then you have to
+          go back to Linux configuration Setup. Type "make menuconfig" in
+          directory /usr/src/linux.
+
+
+       3.5.6 Make tty device and special file
+          # cd /moxa/mxser/driver
+          # ./msmknod
+
+       3.5.7 Make utility
+          # cd /moxa/mxser/utility
+          # make clean; make install
+
+       3.5.8 Reboot
+
+
+
+   3.6 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.
+
+       3.6.1 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.
+       3.6.2 Create special files
+          Run /moxa/mxser/driver/msmknod to create special files with
+          specified major numbers.
+       3.6.3 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
+       3.6.4 Run "make clean; make install" in /moxa/mxser/driver.
+
+   3.7 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.
+
+   Before using these utilities, please load driver (refer 3.4 & 3.5) and
+   make sure you had run the "msmknod" utility.
+
+   msdiag - Diagnostic
+   --------------------
+   This utility provides the function to display what Moxa Smartio/Industio
+   board found by 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 disable.
+   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 set the custom divison.
+   baud_base      This option set 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.
+
+   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/Industio family driver!
+   Solution:
+   Load Moxa driver fail, the major number may conflict with other devices.
+   Please refer to previous section 3.7 to change a free major number for
+   Moxa driver.
+
+   Error msg: Couldn't install MOXA Smartio/Industio family callout driver!
+   Solution:
+   Load Moxa callout driver fail, the callout device major number may
+   conflict with other devices. Please refer to previous section 3.7 to
+   change a free callout device major number for Moxa driver.
+
+
+-----------------------------------------------------------------------------
+