#! /bin/bash

#
# This script executes the virtual machine defined by a configuration
# script in a passthrough environment.
#
export PATH=/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/sbin:/usr/local/bin:$PATH

# The name of the script defining the virtual machine to run.
declare VMscript;

# The list of PCI devices to be passed through.
declare -r PCIdevices="0000:00:01.0 0000:00:01.1 0000:00:12.0 0000:00:12.2";

# The list of PCI devices which are to be re-enabled.
declare -r EnableDevices="0000:00:01.0 0000:00:01.1";

# The list of PCI drivers which are to be re-bound and the devices which
# they are to be bound to.
declare -r PCIdrivers="ehci_hcd";
declare -r ehci_hcd="";


#
# This function is responsible for unbinding and attaching the PCI
# devices to be passed through to the pciback driver.
#

function unbind_devices() {

	local dev;

	for dev in $PCIdevices;
	do
		[ ! -e /sys/bus/pci/devices/$dev/driver/unbind ] || \
			echo -n $dev > /sys/bus/pci/devices/$dev/driver/unbind;
		echo -n $dev > /sys/bus/pci/drivers/pciback/new_slot;
		echo -n $dev > /sys/bus/pci/drivers/pciback/bind;
	done;

	return;

}

#
# Main program starts here.
#
VMscript="/etc/xen/orthowin.cfg";


#
# Unbind devices and start the virtual machine.
#
unbind_devices;
#sleep 10s;

xl -f create $VMscript ;

exit;
# xl create /etc/xen/$VMscript


# Wait for the virtual machine to exit;
while [ "$VMdone" != "true" ];
do
#	xm domid Windows >/dev/null 2>&1
	xl domid mercury-xen11  2>&1
	if [ $? -ne 0 ]; then
		VMdone="true";
	else
		#sleep 1m;
	fi;
done;


#
# Unbind drivers from pciback.
#
for dev in $PCIdevices;
do
	echo $dev >| /sys/bus/pci/drivers/pciback/unbind;
done;
#sleep 10s;


#
# Re-bind drivers.
#
for driver in $PCIdrivers;
do
	eval device=\$$driver;
	for dev in $device;
	do
		echo $dev >| /sys/bus/pci/drivers/$driver/bind;
	done;
done;
#sleep 10s;


#
# Re-enable PCI devices
#
for dev in $EnableDevices;
do
	echo 1 >| /sys/bus/pci/devices/$dev/enable;
done;
#sleep 10s;


#
# Re-initialize video.
#
/usr/sbin/vbetool post;
#sleep 10s
echo;

exit;