Merge branch 'linus' into core/rcu

1 files changed, 522 insertions, 0 deletions

diff --git a/Documentation/serial/computone.txt b/Documentation/serial/computone.txt
new file mode 100644
index 000000000000..c57ea4781e5d
--- /dev/null
+++ b/Documentation/serial/computone.txt
@@ -0,0 +1,522 @@
+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/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