#! /bin/sh
# Autodetection script for scanning /sys for pci stuff
# for Archlinux by Tobias Powalowski <tpowa@archlinux.org>
usage () {
	echo "$0 [options]"
	echo ""
	echo " This is a tool that detects/lists modules that are exported by /sys"
	echo ""
	echo "  Options:"
	echo "    -load-modules         load all detected modules"
	echo "    -show-modules         show all detected modules"
	echo "    -show-agp             show AGP modules"	
	echo "    -show-ide             show IDE modules"
	echo "    -show-scsi            show SCSI modules"
	echo "    -show-sata            show SATA modules"
	echo "    -show-usb             show USB modules"
	echo "    -show-fw              show FIREWIRE modules"
	echo "    -show-net             show NETWORK modules"
	echo "    -show-pcmcia          show PCMCIA modules"
	echo "    -show-sound           show SOUND modules"
	echo "    -show-video           show VIDEO modules"
	echo "    -show-other           show OTHER modules"
	echo ""
	echo "  For /etc/mkinitrd.conf use:"
	echo "    -ide                  show detected HOSTCONTROLLER_IDE"
	echo "    -scsi                 show detected HOSTCONTROLLER_SCSI"
	echo "    -sata                 show detected HOSTCONTROLLER_SATA"
	echo "    -usb                  show detected HOSTCONTROLER_USB"
	echo ""
	exit 1
}

[ "$1" == "" ] && usage

# find pci aliases
find /sys/ -name "modalias" | grep pci > /tmp/modules
for i in `cat /tmp/modules`; do
	cat $i >> /tmp/modprobe
done

# generate files for the different actions
for i in `cat /tmp/modprobe`; do
	modprobe --show-depends $i >> /tmp/modules-plain 2>/dev/null
done
sort -u /tmp/modules-plain >> /tmp/modules-sorted
sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" /tmp/modules-sorted >> /tmp/moduleslist

# starting different actions
while [ $# -gt 0 ]; do
	case $1 in
		-load-modules)
			# load all detected pci modules
			for i in `cat /tmp/modprobe`; do
				modprobe $i > /dev/null 2>&1
			done
			;;

		-show-modules)
			# show all detected modules
			for i in `cat /tmp/moduleslist`; do
				echo "Detected module: \"$i\""
			done
			;;

		-show-agp)
			#show detected IDE modules
			grep "agp/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-ide)
			#show detected IDE modules
			grep "ide/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-scsi)
			#show detected SCSI modules
			grep "scsi/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" | grep -v "sata" 
			;;
		
		-show-sata)
			#show detected SATA modules
			grep "sata" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-usb)
			#show detected USB modules
			grep "usb/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-fw)
			#show detected FIREWIRE modules
			grep "ieee1394/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-net)
			#show detected NETWORK modules
			grep "net/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-pcmcia)
			#show detected PCMCIA modules
			grep "pcmcia/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-sound)
			#show detected NETWORK modules
			grep "sound/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-video)
			#show detected VIDEO modules
			grep "video/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-show-other)
			#show detected OTHER modules
			grep -v "agp/" /tmp/modules-sorted | grep -v "ide/" | grep -v "scsi/" | grep -v "sata" \
			| grep -v "usb/" | grep -v "ieee1394" | grep -v "net/" | grep -v "pcmcia/" | grep -v "sound/"\
			| grep -v "video/" | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-ide)
			#show detected IDE modules
			grep "ide/pci" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		-scsi)
			#show detected SCSI modules
			grep "scsi/" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" | grep -v "sata" 
			;;

		-sata)
			#show detected SATA modules
			grep "sata" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p"
			;;

		-usb)
			#show detected USB modules
			grep "usb/host" /tmp/modules-sorted | sed -ne "s#^insmod.*/\(.*\)\.ko.*#\1#p" 
			;;

		esac
	shift
done

# cleanup
rm /tmp/{modules-plain,modules-sorted,moduleslist,modprobe,modules}