Documentation/computone.txt - linux - Git at Google


            
            NOTE: This is an unmaintained driver.  It is not guaranteed to work due to

            
            changes made in the tty layer in 2.6.  If you wish to take over maintenance of

            
            this driver, contact Michael Warfield <mhw@wittsend.com>.


            Changelog:

            
            ----------

            
            11-01-2001:	Original Document


            10-29-2004:	Minor misspelling & format fix, update status of driver.

            
            		James Nelson <james4765@gmail.com>


            Computone Intelliport II/Plus Multiport Serial Driver

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


            Release Notes For Linux Kernel 2.2 and higher.

            
            These notes are for the drivers which have already been integrated into the

            
            kernel and have been tested on Linux kernels 2.0, 2.2, 2.3, and 2.4.


            Version: 1.2.14

            
            Date: 11/01/2001

            
            Historical Author: Andrew Manison <amanison@america.net>

            
            Primary Author: Doug McNash

            
            Support: support@computone.com

            
            Fixes and Updates: Mike Warfield <mhw@wittsend.com>


            This file assumes that you are using the Computone drivers which are

            
            integrated into the kernel sources.  For updating the drivers or installing

            
            drivers into kernels which do not already have Computone drivers, please

            
            refer to the instructions in the README.computone file in the driver patch.


            1. INTRODUCTION


            This driver supports the entire family of Intelliport II/Plus controllers

            
            with the exception of the MicroChannel controllers.  It does not support

            
            products previous to the Intelliport II.


            This driver was developed on the v2.0.x Linux tree and has been tested up

            
            to v2.4.14; it will probably not work with earlier v1.X kernels,.


            2. QUICK INSTALLATION


            Hardware - If you have an ISA card, find a free interrupt and io port.

            
            		   List those in use with `cat /proc/interrupts` and

            
            		   `cat /proc/ioports`.  Set the card dip switches to a free

            
            		   address.  You may need to configure your BIOS to reserve an

            
            		   irq for an ISA card.  PCI and EISA parameters are set

            
            		   automagically.  Insert card into computer with the power off

            
            		   before or after drivers installation.


            	Note the hardware address from the Computone ISA cards installed into

            
            		the system.  These are required for editing ip2.c or editing

            
            		/etc/modprobe.conf, or for specification on the modprobe

            
            		command line.


            	Note that the /etc/modules.conf should be used for older (pre-2.6)

            
            		kernels.


            Software -


            Module installation:


            a) Determine free irq/address to use if any (configure BIOS if need be)

            
            b) Run "make config" or "make menuconfig" or "make xconfig"

            
               Select (m) module for CONFIG_COMPUTONE under character

            
               devices.  CONFIG_PCI and CONFIG_MODULES also may need to be set.

            
            c) Set address on ISA cards then:

            
               edit /usr/src/linux/drivers/char/ip2.c if needed

            
            	or

            
               edit /etc/modprobe.conf if needed (module).

            
            	or both to match this setting.

            
            d) Run "make modules"

            
            e) Run "make modules_install"

            
            f) Run "/sbin/depmod -a"

            
            g) install driver using `modprobe ip2 <options>` (options listed below)

            
            h) run ip2mkdev (either the script below or the binary version)


            Kernel installation:


            a) Determine free irq/address to use if any (configure BIOS if need be)

            
            b) Run "make config" or "make menuconfig" or "make xconfig"

            
               Select (y) kernel for CONFIG_COMPUTONE under character

            
               devices.  CONFIG_PCI may need to be set if you have PCI bus.

            
            c) Set address on ISA cards then:

            
            	   edit /usr/src/linux/drivers/char/ip2.c

            
                       (Optional - may be specified on kernel command line now)

            
            d) Run "make zImage" or whatever target you prefer.

            
            e) mv /usr/src/linux/arch/i386/boot/zImage to /boot.

            
            f) Add new config for this kernel into /etc/lilo.conf, run "lilo"

            
            	or copy to a floppy disk and boot from that floppy disk.

            
            g) Reboot using this kernel

            
            h) run ip2mkdev (either the script below or the binary version)


            Kernel command line options:


            When compiling the driver into the kernel, io and irq may be

            
            compiled into the driver by editing ip2.c and setting the values for

            
            io and irq in the appropriate array.  An alternative is to specify

            
            a command line parameter to the kernel at boot up.


                    ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3


            Note that this order is very different from the specifications for the

            
            modload parameters which have separate IRQ and IO specifiers.


            The io port also selects PCI (1) and EISA (2) boards.


                    io=0    No board

            
                    io=1    PCI board

            
                    io=2    EISA board

            
                    else    ISA board io address


            You only need to specify the boards which are present.


                    Examples:


                            2 PCI boards:


                                    ip2=1,0,1,0


                            1 ISA board at 0x310 irq 5:


                                    ip2=0x310,5


            This can be added to and "append" option in lilo.conf similar to this:


                    append="ip2=1,0,1,0"


            3. INSTALLATION


            Previously, the driver sources were packaged with a set of patch files

            
            to update the character drivers' makefile and configuration file, and other

            
            kernel source files. A build script (ip2build) was included which applies

            
            the patches if needed, and build any utilities needed.

            
            What you receive may be a single patch file in conventional kernel

            
            patch format build script. That form can also be applied by

            
            running patch -p1 < ThePatchFile.  Otherwise run ip2build.


            The driver can be installed as a module (recommended) or built into the

            
            kernel. This is selected as for other drivers through the `make config`

            
            command from the root of the Linux source tree. If the driver is built

            
            into the kernel you will need to edit the file ip2.c to match the boards

            
            you are installing. See that file for instructions. If the driver is

            
            installed as a module the configuration can also be specified on the

            
            modprobe command line as follows:


            	modprobe ip2 irq=irq1,irq2,irq3,irq4 io=addr1,addr2,addr3,addr4


            where irqnum is one of the valid Intelliport II interrupts (3,4,5,7,10,11,

            
            12,15) and addr1-4 are the base addresses for up to four controllers. If

            
            the irqs are not specified the driver uses the default in ip2.c (which

            
            selects polled mode). If no base addresses are specified the defaults in

            
            ip2.c are used. If you are autoloading the driver module with kerneld or

            
            kmod the base addresses and interrupt number must also be set in ip2.c

            
            and recompile or just insert and options line in /etc/modprobe.conf or both.

            
            The options line is equivalent to the command line and takes precedence over

            
            what is in ip2.c.


            /etc/modprobe.conf sample:

            
            	options ip2 io=1,0x328 irq=1,10

            
            	alias char-major-71 ip2

            
            	alias char-major-72 ip2

            
            	alias char-major-73 ip2


            The equivalent in ip2.c:


            static int io[IP2_MAX_BOARDS]= { 1, 0x328, 0, 0 };

            
            static int irq[IP2_MAX_BOARDS] = { 1, 10, -1, -1 };


            The equivalent for the kernel command line (in lilo.conf):


                    append="ip2=1,1,0x328,10"


            Note:	Both io and irq should be updated to reflect YOUR system.  An "io"

            
            	address of 1 or 2 indicates a PCI or EISA card in the board table.

            
            	The PCI or EISA irq will be assigned automatically.


            Specifying an invalid or in-use irq will default the driver into

            
            running in polled mode for that card.  If all irq entries are 0 then

            
            all cards will operate in polled mode.


            If you select the driver as part of the kernel run :


            	make zlilo (or whatever you do to create a bootable kernel)


            If you selected a module run :


            	make modules && make modules_install


            The utility ip2mkdev (see 5 and 7 below) creates all the device nodes

            
            required by the driver.  For a device to be created it must be configured

            
            in the driver and the board must be installed. Only devices corresponding

            
            to real IntelliPort II ports are created. With multiple boards and expansion

            
            boxes this will leave gaps in the sequence of device names. ip2mkdev uses

            
            Linux tty naming conventions: ttyF0 - ttyF255 for normal devices, and

            
            cuf0 - cuf255 for callout devices.


            4. USING THE DRIVERS


            As noted above, the driver implements the ports in accordance with Linux

            
            conventions, and the devices should be interchangeable with the standard

            
            serial devices. (This is a key point for problem reporting: please make

            
            sure that what you are trying do works on the ttySx/cuax ports first; then

            
            tell us what went wrong with the ip2 ports!)


            Higher speeds can be obtained using the setserial utility which remaps

            
            38,400 bps (extb) to 57,600 bps, 115,200 bps, or a custom speed.

            
            Intelliport II installations using the PowerPort expansion module can

            
            use the custom speed setting to select the highest speeds: 153,600 bps,

            
            230,400 bps, 307,200 bps, 460,800bps and 921,600 bps. The base for

            
            custom baud rate configuration is fixed at 921,600 for cards/expansion

            
            modules with ST654's and 115200 for those with Cirrus CD1400's.  This

            
            corresponds to the maximum bit rates those chips are capable.

            
            For example if the baud base is 921600 and the baud divisor is 18 then

            
            the custom rate is 921600/18 = 51200 bps.  See the setserial man page for

            
            complete details. Of course if stty accepts the higher rates now you can

            
            use that as well as the standard ioctls().


            5. ip2mkdev and assorted utilities...


            Several utilities, including the source for a binary ip2mkdev utility are

            
            available under .../drivers/char/ip2.  These can be build by changing to

            
            that directory and typing "make" after the kernel has be built.  If you do

            
            not wish to compile the binary utilities, the shell script below can be

            
            cut out and run as "ip2mkdev" to create the necessary device files.  To

            
            use the ip2mkdev script, you must have procfs enabled and the proc file

            
            system mounted on /proc.


            6. NOTES


            This is a release version of the driver, but it is impossible to test it

            
            in all configurations of Linux. If there is any anomalous behaviour that

            
            does not match the standard serial port's behaviour please let us know.


            7. ip2mkdev shell script


            Previously, this script was simply attached here.  It is now attached as a

            
            shar archive to make it easier to extract the script from the documentation.

            
            To create the ip2mkdev shell script change to a convenient directory (/tmp

            
            works just fine) and run the following command:


            	unshar Documentation/computone.txt

            
            		(This file)


            You should now have a file ip2mkdev in your current working directory with

            
            permissions set to execute.  Running that script with then create the

            
            necessary devices for the Computone boards, interfaces, and ports which

            
            are present on you system at the time it is run.


            #!/bin/sh

            
            # This is a shell archive (produced by GNU sharutils 4.2.1).

            
            # To extract the files from this archive, save it to some FILE, remove

            
            # everything before the `!/bin/sh' line above, then type `sh FILE'.

            
            #

            
            # Made on 2001-10-29 10:32 EST by <mhw@alcove.wittsend.com>.

            
            # Source directory was `/home2/src/tmp'.

            
            #

            
            # Existing files will *not* be overwritten unless `-c' is specified.

            
            #

            
            # This shar contains:

            
            # length mode       name

            
            # ------ ---------- ------------------------------------------

            
            #   4251 -rwxr-xr-x ip2mkdev

            
            #

            
            save_IFS="${IFS}"

            
            IFS="${IFS}:"

            
            gettext_dir=FAILED

            
            locale_dir=FAILED

            
            first_param="$1"

            
            for dir in $PATH

            
            do

            
              if test "$gettext_dir" = FAILED && test -f $dir/gettext \

            
                 && ($dir/gettext --version >/dev/null 2>&1)

            
              then

            
                set `$dir/gettext --version 2>&1`

            
                if test "$3" = GNU

            
                then

            
                  gettext_dir=$dir

            
                fi

            
              fi

            
              if test "$locale_dir" = FAILED && test -f $dir/shar \

            
                 && ($dir/shar --print-text-domain-dir >/dev/null 2>&1)

            
              then

            
                locale_dir=`$dir/shar --print-text-domain-dir`

            
              fi

            
            done

            
            IFS="$save_IFS"

            
            if test "$locale_dir" = FAILED || test "$gettext_dir" = FAILED

            
            then

            
              echo=echo

            
            else

            
              TEXTDOMAINDIR=$locale_dir

            
              export TEXTDOMAINDIR

            
              TEXTDOMAIN=sharutils

            
              export TEXTDOMAIN

            
              echo="$gettext_dir/gettext -s"

            
            fi

            
            if touch -am -t 200112312359.59 $$.touch >/dev/null 2>&1 && test ! -f 200112312359.59 -a -f $$.touch; then

            
              shar_touch='touch -am -t $1$2$3$4$5$6.$7 "$8"'

            
            elif touch -am 123123592001.59 $$.touch >/dev/null 2>&1 && test ! -f 123123592001.59 -a ! -f 123123592001.5 -a -f $$.touch; then

            
              shar_touch='touch -am $3$4$5$6$1$2.$7 "$8"'

            
            elif touch -am 1231235901 $$.touch >/dev/null 2>&1 && test ! -f 1231235901 -a -f $$.touch; then

            
              shar_touch='touch -am $3$4$5$6$2 "$8"'

            
            else

            
              shar_touch=:

            
              echo

            
              $echo 'WARNING: not restoring timestamps.  Consider getting and'

            
              $echo "installing GNU \`touch', distributed in GNU File Utilities..."

            
              echo

            
            fi

            
            rm -f 200112312359.59 123123592001.59 123123592001.5 1231235901 $$.touch

            
            #

            
            if mkdir _sh17581; then

            
              $echo 'x -' 'creating lock directory'

            
            else

            
              $echo 'failed to create lock directory'

            
              exit 1

            
            fi

            
            # ============= ip2mkdev ==============

            
            if test -f 'ip2mkdev' && test "$first_param" != -c; then

            
              $echo 'x -' SKIPPING 'ip2mkdev' '(file already exists)'

            
            else

            
              $echo 'x -' extracting 'ip2mkdev' '(text)'

            
              sed 's/^X//' << 'SHAR_EOF' > 'ip2mkdev' &&

            
            #!/bin/sh -

            
            #

            
            #	ip2mkdev

            
            #

            
            #	Make or remove devices as needed for Computone Intelliport drivers

            
            #

            
            #	First rule!  If the dev file exists and you need it, don't mess

            
            #	with it.  That prevents us from screwing up open ttys, ownership

            
            #	and permissions on a running system!

            
            #

            
            #	This script will NOT remove devices that no longer exist if their

            
            #	board or interface box has been removed.  If you want to get rid

            
            #	of them, you can manually do an "rm -f /dev/ttyF* /dev/cuaf*"

            
            #	before running this script.  Running this script will then recreate

            
            #	all the valid devices.

            
            #

            
            #	Michael H. Warfield

            
            #	/\/\|=mhw=|\/\/

            
            #	mhw@wittsend.com

            
            #

            
            #	Updated 10/29/2000 for version 1.2.13 naming convention

            
            #		under devfs.	/\/\|=mhw=|\/\/

            
            #

            
            #	Updated 03/09/2000 for devfs support in ip2 drivers. /\/\|=mhw=|\/\/

            
            #

            
            X

            
            if test -d /dev/ip2 ; then

            
            #	This is devfs mode...  We don't do anything except create symlinks

            
            #	from the real devices to the old names!

            
            X	cd /dev

            
            X	echo "Creating symbolic links to devfs devices"

            
            X	for i in `ls ip2` ; do

            
            X		if test ! -L ip2$i ; then

            
            X			# Remove it incase it wasn't a symlink (old device)

            
            X			rm -f ip2$i

            
            X			ln -s ip2/$i ip2$i

            
            X		fi

            
            X	done

            
            X	for i in `( cd tts ; ls F* )` ; do

            
            X		if test ! -L tty$i ; then

            
            X			# Remove it incase it wasn't a symlink (old device)

            
            X			rm -f tty$i

            
            X			ln -s tts/$i tty$i

            
            X		fi

            
            X	done

            
            X	for i in `( cd cua ; ls F* )` ; do

            
            X		DEVNUMBER=`expr $i : 'F\(.*\)'`

            
            X		if test ! -L cuf$DEVNUMBER ; then

            
            X			# Remove it incase it wasn't a symlink (old device)

            
            X			rm -f cuf$DEVNUMBER

            
            X			ln -s cua/$i cuf$DEVNUMBER

            
            X		fi

            
            X	done

            
            X	exit 0

            
            fi

            
            X

            
            if test ! -f /proc/tty/drivers

            
            then

            
            X	echo "\

            
            Unable to check driver status.

            
            Make sure proc file system is mounted."

            
            X

            
            X	exit 255

            
            fi

            
            X

            
            if test ! -f /proc/tty/driver/ip2

            
            then

            
            X	echo "\

            
            Unable to locate ip2 proc file.

            
            Attempting to load driver"

            
            X

            
            X	if /sbin/insmod ip2

            
            X	then

            
            X		if test ! -f /proc/tty/driver/ip2

            
            X		then

            
            X			echo "\

            
            Unable to locate ip2 proc file after loading driver.

            
            Driver initialization failure or driver version error.

            
            "

            
            X		exit 255

            
            X		fi

            
            X	else

            
            X		echo "Unable to load ip2 driver."

            
            X		exit 255

            
            X	fi

            
            fi

            
            X

            
            # Ok...  So we got the driver loaded and we can locate the procfs files.

            
            # Next we need our major numbers.

            
            X

            
            TTYMAJOR=`sed -e '/^ip2/!d' -e '/\/dev\/tt/!d' -e 's/.*tt[^ 	]*[ 	]*\([0-9]*\)[ 	]*.*/\1/' < /proc/tty/drivers`

            
            CUAMAJOR=`sed -e '/^ip2/!d' -e '/\/dev\/cu/!d' -e 's/.*cu[^ 	]*[ 	]*\([0-9]*\)[ 	]*.*/\1/' < /proc/tty/drivers`

            
            BRDMAJOR=`sed -e '/^Driver: /!d' -e 's/.*IMajor=\([0-9]*\)[ 	]*.*/\1/' < /proc/tty/driver/ip2`

            
            X

            
            echo "\

            
            TTYMAJOR = $TTYMAJOR

            
            CUAMAJOR = $CUAMAJOR

            
            BRDMAJOR = $BRDMAJOR

            
            "

            
            X

            
            # Ok...  Now we should know our major numbers, if appropriate...

            
            # Now we need our boards and start the device loops.

            
            X

            
            grep '^Board [0-9]:' /proc/tty/driver/ip2 | while read token number type alltherest

            
            do

            
            X	# The test for blank "type" will catch the stats lead-in lines

            
            X	# if they exist in the file

            
            X	if test "$type" = "vacant" -o "$type" = "Vacant" -o "$type" = ""

            
            X	then

            
            X		continue

            
            X	fi

            
            X

            
            X	BOARDNO=`expr "$number" : '\([0-9]\):'`

            
            X	PORTS=`expr "$alltherest" : '.*ports=\([0-9]*\)' | tr ',' ' '`

            
            X	MINORS=`expr "$alltherest" : '.*minors=\([0-9,]*\)' | tr ',' ' '`

            
            X

            
            X	if test "$BOARDNO" = "" -o "$PORTS" = ""

            
            X	then

            
            #	This may be a bug.  We should at least get this much information

            
            X		echo "Unable to process board line"

            
            X		continue

            
            X	fi

            
            X

            
            X	if test "$MINORS" = ""

            
            X	then

            
            #	Silently skip this one.  This board seems to have no boxes

            
            X		continue

            
            X	fi

            
            X

            
            X	echo "board $BOARDNO: $type ports = $PORTS; port numbers = $MINORS"

            
            X

            
            X	if test "$BRDMAJOR" != ""

            
            X	then

            
            X		BRDMINOR=`expr $BOARDNO \* 4`

            
            X		STSMINOR=`expr $BRDMINOR + 1`

            
            X		if test ! -c /dev/ip2ipl$BOARDNO ; then

            
            X			mknod /dev/ip2ipl$BOARDNO c $BRDMAJOR $BRDMINOR

            
            X		fi

            
            X		if test ! -c /dev/ip2stat$BOARDNO ; then

            
            X			mknod /dev/ip2stat$BOARDNO c $BRDMAJOR $STSMINOR

            
            X		fi

            
            X	fi

            
            X

            
            X	if test "$TTYMAJOR" != ""

            
            X	then

            
            X		PORTNO=$BOARDBASE

            
            X

            
            X		for PORTNO in $MINORS

            
            X		do

            
            X			if test ! -c /dev/ttyF$PORTNO ; then

            
            X				# We got the hardware but no device - make it

            
            X				mknod /dev/ttyF$PORTNO c $TTYMAJOR $PORTNO

            
            X			fi

            
            X		done

            
            X	fi

            
            X

            
            X	if test "$CUAMAJOR" != ""

            
            X	then

            
            X		PORTNO=$BOARDBASE

            
            X

            
            X		for PORTNO in $MINORS

            
            X		do

            
            X			if test ! -c /dev/cuf$PORTNO ; then

            
            X				# We got the hardware but no device - make it

            
            X				mknod /dev/cuf$PORTNO c $CUAMAJOR $PORTNO

            
            X			fi

            
            X		done

            
            X	fi

            
            done

            
            X

            
            Xexit 0

            
            SHAR_EOF

            
              (set 20 01 10 29 10 32 01 'ip2mkdev'; eval "$shar_touch") &&

            
              chmod 0755 'ip2mkdev' ||

            
              $echo 'restore of' 'ip2mkdev' 'failed'

            
              if ( md5sum --help 2>&1 | grep 'sage: md5sum \[' ) >/dev/null 2>&1 \

            
              && ( md5sum --version 2>&1 | grep -v 'textutils 1.12' ) >/dev/null; then

            
                md5sum -c << SHAR_EOF >/dev/null 2>&1 \

            
                || $echo 'ip2mkdev:' 'MD5 check failed'

            
            cb5717134509f38bad9fde6b1f79b4a4  ip2mkdev

            
            SHAR_EOF

            
              else

            
                shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'ip2mkdev'`"

            
                test 4251 -eq "$shar_count" ||

            
                $echo 'ip2mkdev:' 'original size' '4251,' 'current size' "$shar_count!"

            
              fi

            
            fi

            
            rm -fr _sh17581

            
            exit 0
	NOTE: This is an unmaintained driver. It is not guaranteed to work due to
	changes made in the tty layer in 2.6. If you wish to take over maintenance of
	this driver, contact Michael Warfield <mhw@wittsend.com>.

	Changelog:
	----------
	11-01-2001: Original Document

	10-29-2004: Minor misspelling & format fix, update status of driver.
	James Nelson <james4765@gmail.com>

	Computone Intelliport II/Plus Multiport Serial Driver
	-----------------------------------------------------

	Release Notes For Linux Kernel 2.2 and higher.
	These notes are for the drivers which have already been integrated into the
	kernel and have been tested on Linux kernels 2.0, 2.2, 2.3, and 2.4.

	Version: 1.2.14
	Date: 11/01/2001
	Historical Author: Andrew Manison <amanison@america.net>
	Primary Author: Doug McNash
	Support: support@computone.com
	Fixes and Updates: Mike Warfield <mhw@wittsend.com>

	This file assumes that you are using the Computone drivers which are
	integrated into the kernel sources. For updating the drivers or installing
	drivers into kernels which do not already have Computone drivers, please
	refer to the instructions in the README.computone file in the driver patch.


	1. INTRODUCTION

	This driver supports the entire family of Intelliport II/Plus controllers
	with the exception of the MicroChannel controllers. It does not support
	products previous to the Intelliport II.

	This driver was developed on the v2.0.x Linux tree and has been tested up
	to v2.4.14; it will probably not work with earlier v1.X kernels,.


	2. QUICK INSTALLATION

	Hardware - If you have an ISA card, find a free interrupt and io port.
	List those in use with `cat /proc/interrupts` and
	`cat /proc/ioports`. Set the card dip switches to a free
	address. You may need to configure your BIOS to reserve an
	irq for an ISA card. PCI and EISA parameters are set
	automagically. Insert card into computer with the power off
	before or after drivers installation.

	Note the hardware address from the Computone ISA cards installed into
	the system. These are required for editing ip2.c or editing
	/etc/modprobe.conf, or for specification on the modprobe
	command line.

	Note that the /etc/modules.conf should be used for older (pre-2.6)
	kernels.

	Software -

	Module installation:

	a) Determine free irq/address to use if any (configure BIOS if need be)
	b) Run "make config" or "make menuconfig" or "make xconfig"
	Select (m) module for CONFIG_COMPUTONE under character
	devices. CONFIG_PCI and CONFIG_MODULES also may need to be set.
	c) Set address on ISA cards then:
	edit /usr/src/linux/drivers/char/ip2.c if needed
	or
	edit /etc/modprobe.conf if needed (module).
	or both to match this setting.
	d) Run "make modules"
	e) Run "make modules_install"
	f) Run "/sbin/depmod -a"
	g) install driver using `modprobe ip2 <options>` (options listed below)
	h) run ip2mkdev (either the script below or the binary version)


	Kernel installation:

	a) Determine free irq/address to use if any (configure BIOS if need be)
	b) Run "make config" or "make menuconfig" or "make xconfig"
	Select (y) kernel for CONFIG_COMPUTONE under character
	devices. CONFIG_PCI may need to be set if you have PCI bus.
	c) Set address on ISA cards then:
	edit /usr/src/linux/drivers/char/ip2.c
	(Optional - may be specified on kernel command line now)
	d) Run "make zImage" or whatever target you prefer.
	e) mv /usr/src/linux/arch/i386/boot/zImage to /boot.
	f) Add new config for this kernel into /etc/lilo.conf, run "lilo"
	or copy to a floppy disk and boot from that floppy disk.
	g) Reboot using this kernel
	h) run ip2mkdev (either the script below or the binary version)

	Kernel command line options:

	When compiling the driver into the kernel, io and irq may be
	compiled into the driver by editing ip2.c and setting the values for
	io and irq in the appropriate array. An alternative is to specify
	a command line parameter to the kernel at boot up.

	ip2=io0,irq0,io1,irq1,io2,irq2,io3,irq3

	Note that this order is very different from the specifications for the
	modload parameters which have separate IRQ and IO specifiers.

	The io port also selects PCI (1) and EISA (2) boards.

	io=0 No board
	io=1 PCI board
	io=2 EISA board
	else ISA board io address

	You only need to specify the boards which are present.

	Examples:

	2 PCI boards:

	ip2=1,0,1,0

	1 ISA board at 0x310 irq 5:

	ip2=0x310,5

	This can be added to and "append" option in lilo.conf similar to this:

	append="ip2=1,0,1,0"


	3. INSTALLATION

	Previously, the driver sources were packaged with a set of patch files
	to update the character drivers' makefile and configuration file, and other
	kernel source files. A build script (ip2build) was included which applies
	the patches if needed, and build any utilities needed.
	What you receive may be a single patch file in conventional kernel
	patch format build script. That form can also be applied by
	running patch -p1 < ThePatchFile. Otherwise run ip2build.

	The driver can be installed as a module (recommended) or built into the
	kernel. This is selected as for other drivers through the `make config`
	command from the root of the Linux source tree. If the driver is built
	into the kernel you will need to edit the file ip2.c to match the boards
	you are installing. See that file for instructions. If the driver is
	installed as a module the configuration can also be specified on the
	modprobe command line as follows:

	modprobe ip2 irq=irq1,irq2,irq3,irq4 io=addr1,addr2,addr3,addr4

	where irqnum is one of the valid Intelliport II interrupts (3,4,5,7,10,11,
	12,15) and addr1-4 are the base addresses for up to four controllers. If
	the irqs are not specified the driver uses the default in ip2.c (which
	selects polled mode). If no base addresses are specified the defaults in
	ip2.c are used. If you are autoloading the driver module with kerneld or
	kmod the base addresses and interrupt number must also be set in ip2.c
	and recompile or just insert and options line in /etc/modprobe.conf or both.
	The options line is equivalent to the command line and takes precedence over
	what is in ip2.c.

	/etc/modprobe.conf sample:
	options ip2 io=1,0x328 irq=1,10
	alias char-major-71 ip2
	alias char-major-72 ip2
	alias char-major-73 ip2

	The equivalent in ip2.c:

	static int io[IP2_MAX_BOARDS]= { 1, 0x328, 0, 0 };
	static int irq[IP2_MAX_BOARDS] = { 1, 10, -1, -1 };

	The equivalent for the kernel command line (in lilo.conf):

	append="ip2=1,1,0x328,10"


	Note: Both io and irq should be updated to reflect YOUR system. An "io"
	address of 1 or 2 indicates a PCI or EISA card in the board table.
	The PCI or EISA irq will be assigned automatically.

	Specifying an invalid or in-use irq will default the driver into
	running in polled mode for that card. If all irq entries are 0 then
	all cards will operate in polled mode.

	If you select the driver as part of the kernel run :

	make zlilo (or whatever you do to create a bootable kernel)

	If you selected a module run :

	make modules && make modules_install

	The utility ip2mkdev (see 5 and 7 below) creates all the device nodes
	required by the driver. For a device to be created it must be configured
	in the driver and the board must be installed. Only devices corresponding
	to real IntelliPort II ports are created. With multiple boards and expansion
	boxes this will leave gaps in the sequence of device names. ip2mkdev uses
	Linux tty naming conventions: ttyF0 - ttyF255 for normal devices, and
	cuf0 - cuf255 for callout devices.


	4. USING THE DRIVERS

	As noted above, the driver implements the ports in accordance with Linux
	conventions, and the devices should be interchangeable with the standard
	serial devices. (This is a key point for problem reporting: please make
	sure that what you are trying do works on the ttySx/cuax ports first; then
	tell us what went wrong with the ip2 ports!)

	Higher speeds can be obtained using the setserial utility which remaps
	38,400 bps (extb) to 57,600 bps, 115,200 bps, or a custom speed.
	Intelliport II installations using the PowerPort expansion module can
	use the custom speed setting to select the highest speeds: 153,600 bps,
	230,400 bps, 307,200 bps, 460,800bps and 921,600 bps. The base for
	custom baud rate configuration is fixed at 921,600 for cards/expansion
	modules with ST654's and 115200 for those with Cirrus CD1400's. This
	corresponds to the maximum bit rates those chips are capable.
	For example if the baud base is 921600 and the baud divisor is 18 then
	the custom rate is 921600/18 = 51200 bps. See the setserial man page for
	complete details. Of course if stty accepts the higher rates now you can
	use that as well as the standard ioctls().


	5. ip2mkdev and assorted utilities...

	Several utilities, including the source for a binary ip2mkdev utility are
	available under .../drivers/char/ip2. These can be build by changing to
	that directory and typing "make" after the kernel has be built. If you do
	not wish to compile the binary utilities, the shell script below can be
	cut out and run as "ip2mkdev" to create the necessary device files. To
	use the ip2mkdev script, you must have procfs enabled and the proc file
	system mounted on /proc.


	6. NOTES

	This is a release version of the driver, but it is impossible to test it
	in all configurations of Linux. If there is any anomalous behaviour that
	does not match the standard serial port's behaviour please let us know.


	7. ip2mkdev shell script

	Previously, this script was simply attached here. It is now attached as a
	shar archive to make it easier to extract the script from the documentation.
	To create the ip2mkdev shell script change to a convenient directory (/tmp
	works just fine) and run the following command:

	unshar Documentation/computone.txt
	(This file)

	You should now have a file ip2mkdev in your current working directory with
	permissions set to execute. Running that script with then create the
	necessary devices for the Computone boards, interfaces, and ports which
	are present on you system at the time it is run.


	#!/bin/sh
	# This is a shell archive (produced by GNU sharutils 4.2.1).
	# To extract the files from this archive, save it to some FILE, remove
	# everything before the `!/bin/sh' line above, then type `sh FILE'.
	#
	# Made on 2001-10-29 10:32 EST by <mhw@alcove.wittsend.com>.
	# Source directory was `/home2/src/tmp'.
	#
	# Existing files will not be overwritten unless `-c' is specified.
	#
	# This shar contains:
	# length mode name
	# ------ ---------- ------------------------------------------
	# 4251 -rwxr-xr-x ip2mkdev
	#
	save_IFS="${IFS}"
	IFS="${IFS}:"
	gettext_dir=FAILED
	locale_dir=FAILED
	first_param="$1"
	for dir in $PATH
	do
	if test "$gettext_dir" = FAILED && test -f $dir/gettext \
	&& ($dir/gettext --version >/dev/null 2>&1)
	then
	set `$dir/gettext --version 2>&1`
	if test "$3" = GNU
	then
	gettext_dir=$dir
	fi
	fi
	if test "$locale_dir" = FAILED && test -f $dir/shar \
	&& ($dir/shar --print-text-domain-dir >/dev/null 2>&1)
	then
	locale_dir=`$dir/shar --print-text-domain-dir`
	fi
	done
	IFS="$save_IFS"
	if test "$locale_dir" = FAILED \|\| test "$gettext_dir" = FAILED
	then
	echo=echo
	else
	TEXTDOMAINDIR=$locale_dir
	export TEXTDOMAINDIR
	TEXTDOMAIN=sharutils
	export TEXTDOMAIN
	echo="$gettext_dir/gettext -s"
	fi
	if touch -am -t 200112312359.59 $$.touch >/dev/null 2>&1 && test ! -f 200112312359.59 -a -f $$.touch; then
	shar_touch='touch -am -t $1$2$3$4$5$6.$7 "$8"'
	elif touch -am 123123592001.59 $$.touch >/dev/null 2>&1 && test ! -f 123123592001.59 -a ! -f 123123592001.5 -a -f $$.touch; then
	shar_touch='touch -am $3$4$5$6$1$2.$7 "$8"'
	elif touch -am 1231235901 $$.touch >/dev/null 2>&1 && test ! -f 1231235901 -a -f $$.touch; then
	shar_touch='touch -am $3$4$5$6$2 "$8"'
	else
	shar_touch=:
	echo
	$echo 'WARNING: not restoring timestamps. Consider getting and'
	$echo "installing GNU \`touch', distributed in GNU File Utilities..."
	echo
	fi
	rm -f 200112312359.59 123123592001.59 123123592001.5 1231235901 $$.touch
	#
	if mkdir _sh17581; then
	$echo 'x -' 'creating lock directory'
	else
	$echo 'failed to create lock directory'
	exit 1
	fi
	# ============= ip2mkdev ==============
	if test -f 'ip2mkdev' && test "$first_param" != -c; then
	$echo 'x -' SKIPPING 'ip2mkdev' '(file already exists)'
	else
	$echo 'x -' extracting 'ip2mkdev' '(text)'
	sed 's/^X//' << 'SHAR_EOF' > 'ip2mkdev' &&
	#!/bin/sh -
	#
	# ip2mkdev
	#
	# Make or remove devices as needed for Computone Intelliport drivers
	#
	# First rule! If the dev file exists and you need it, don't mess
	# with it. That prevents us from screwing up open ttys, ownership
	# and permissions on a running system!
	#
	# This script will NOT remove devices that no longer exist if their
	# board or interface box has been removed. If you want to get rid
	# of them, you can manually do an "rm -f /dev/ttyF* /dev/cuaf*"
	# before running this script. Running this script will then recreate
	# all the valid devices.
	#
	# Michael H. Warfield
	# /\/\\|=mhw=\|\/\/
	# mhw@wittsend.com
	#
	# Updated 10/29/2000 for version 1.2.13 naming convention
	# under devfs. /\/\\|=mhw=\|\/\/
	#
	# Updated 03/09/2000 for devfs support in ip2 drivers. /\/\\|=mhw=\|\/\/
	#
	X
	if test -d /dev/ip2 ; then
	# This is devfs mode... We don't do anything except create symlinks
	# from the real devices to the old names!
	X cd /dev
	X echo "Creating symbolic links to devfs devices"
	X for i in `ls ip2` ; do
	X if test ! -L ip2$i ; then
	X # Remove it incase it wasn't a symlink (old device)
	X rm -f ip2$i
	X ln -s ip2/$i ip2$i
	X fi
	X done
	X for i in `( cd tts ; ls F* )` ; do
	X if test ! -L tty$i ; then
	X # Remove it incase it wasn't a symlink (old device)
	X rm -f tty$i
	X ln -s tts/$i tty$i
	X fi
	X done
	X for i in `( cd cua ; ls F* )` ; do
	X DEVNUMBER=`expr $i : 'F\(.*\)'`
	X if test ! -L cuf$DEVNUMBER ; then
	X # Remove it incase it wasn't a symlink (old device)
	X rm -f cuf$DEVNUMBER
	X ln -s cua/$i cuf$DEVNUMBER
	X fi
	X done
	X exit 0
	fi
	X
	if test ! -f /proc/tty/drivers
	then
	X echo "\
	Unable to check driver status.
	Make sure proc file system is mounted."
	X
	X exit 255
	fi
	X
	if test ! -f /proc/tty/driver/ip2
	then
	X echo "\
	Unable to locate ip2 proc file.
	Attempting to load driver"
	X
	X if /sbin/insmod ip2
	X then
	X if test ! -f /proc/tty/driver/ip2
	X then
	X echo "\
	Unable to locate ip2 proc file after loading driver.
	Driver initialization failure or driver version error.
	"
	X exit 255
	X fi
	X else
	X echo "Unable to load ip2 driver."
	X exit 255
	X fi
	fi
	X
	# Ok... So we got the driver loaded and we can locate the procfs files.
	# Next we need our major numbers.
	X
	TTYMAJOR=`sed -e '/^ip2/!d' -e '/\/dev\/tt/!d' -e 's/.tt[^ ][ ]\([0-9]\)[ ]./\1/' < /proc/tty/drivers`
	CUAMAJOR=`sed -e '/^ip2/!d' -e '/\/dev\/cu/!d' -e 's/.cu[^ ][ ]\([0-9]\)[ ]./\1/' < /proc/tty/drivers`
	BRDMAJOR=`sed -e '/^Driver: /!d' -e 's/.IMajor=\([0-9]\)[ ]./\1/' < /proc/tty/driver/ip2`
	X
	echo "\
	TTYMAJOR = $TTYMAJOR
	CUAMAJOR = $CUAMAJOR
	BRDMAJOR = $BRDMAJOR
	"
	X
	# Ok... Now we should know our major numbers, if appropriate...
	# Now we need our boards and start the device loops.
	X
	grep '^Board [0-9]:' /proc/tty/driver/ip2 \| while read token number type alltherest
	do
	X # The test for blank "type" will catch the stats lead-in lines
	X # if they exist in the file
	X if test "$type" = "vacant" -o "$type" = "Vacant" -o "$type" = ""
	X then
	X continue
	X fi
	X
	X BOARDNO=`expr "$number" : '\([0-9]\):'`
	X PORTS=`expr "$alltherest" : '.ports=\([0-9]\)' \| tr ',' ' '`
	X MINORS=`expr "$alltherest" : '.minors=\([0-9,]\)' \| tr ',' ' '`
	X
	X if test "$BOARDNO" = "" -o "$PORTS" = ""
	X then
	# This may be a bug. We should at least get this much information
	X echo "Unable to process board line"
	X continue
	X fi
	X
	X if test "$MINORS" = ""
	X then
	# Silently skip this one. This board seems to have no boxes
	X continue
	X fi
	X
	X echo "board $BOARDNO: $type ports = $PORTS; port numbers = $MINORS"
	X
	X if test "$BRDMAJOR" != ""
	X then
	X BRDMINOR=`expr $BOARDNO \* 4`
	X STSMINOR=`expr $BRDMINOR + 1`
	X if test ! -c /dev/ip2ipl$BOARDNO ; then
	X mknod /dev/ip2ipl$BOARDNO c $BRDMAJOR $BRDMINOR
	X fi
	X if test ! -c /dev/ip2stat$BOARDNO ; then
	X mknod /dev/ip2stat$BOARDNO c $BRDMAJOR $STSMINOR
	X fi
	X fi
	X
	X if test "$TTYMAJOR" != ""
	X then
	X PORTNO=$BOARDBASE
	X
	X for PORTNO in $MINORS
	X do
	X if test ! -c /dev/ttyF$PORTNO ; then
	X # We got the hardware but no device - make it
	X mknod /dev/ttyF$PORTNO c $TTYMAJOR $PORTNO
	X fi
	X done
	X fi
	X
	X if test "$CUAMAJOR" != ""
	X then
	X PORTNO=$BOARDBASE
	X
	X for PORTNO in $MINORS
	X do
	X if test ! -c /dev/cuf$PORTNO ; then
	X # We got the hardware but no device - make it
	X mknod /dev/cuf$PORTNO c $CUAMAJOR $PORTNO
	X fi
	X done
	X fi
	done
	X
	Xexit 0
	SHAR_EOF
	(set 20 01 10 29 10 32 01 'ip2mkdev'; eval "$shar_touch") &&
	chmod 0755 'ip2mkdev' \|\|
	$echo 'restore of' 'ip2mkdev' 'failed'
	if ( md5sum --help 2>&1 \| grep 'sage: md5sum \[' ) >/dev/null 2>&1 \
	&& ( md5sum --version 2>&1 \| grep -v 'textutils 1.12' ) >/dev/null; then
	md5sum -c << SHAR_EOF >/dev/null 2>&1 \
	\|\| $echo 'ip2mkdev:' 'MD5 check failed'
	cb5717134509f38bad9fde6b1f79b4a4 ip2mkdev
	SHAR_EOF
	else
	shar_count="`LC_ALL= LC_CTYPE= LANG= wc -c < 'ip2mkdev'`"
	test 4251 -eq "$shar_count" \|\|
	$echo 'ip2mkdev:' 'original size' '4251,' 'current size' "$shar_count!"
	fi
	fi
	rm -fr _sh17581
	exit 0