Documentation/serial/computone.txt - kernel/msm-4.9 - Gitiles

 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

 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.d/*.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 config file in  /etc/modprobe.d/ 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/x86/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.d/*.conf or both.
 The options line is equivalent to the command line and takes precedence over
 what is in ip2.c.

 config sample to put /etc/modprobe.d/*.conf:
 	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/serial/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

	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.d/*.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 config file in /etc/modprobe.d/ 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/x86/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.d/*.conf or both.
	The options line is equivalent to the command line and takes precedence over
	what is in ip2.c.

	config sample to put /etc/modprobe.d/*.conf:
	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/serial/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