Qubes PCI Scripts

pci-attach.sh

#/bin/sh
########
# Attach pci device to vm
#
# usage: pci-attach <domain> <pci-device>
#
# Will attempt to partially match device names, e.g., "1a" -> "0000:00:1a.0"
#

domain=$1
local_dev=$2

if [ $# -ne 2 ]; then
	echo "usage: $0 <doman> <pci_dev>"
	exit 1
fi

# determine pci device name inside vm
count=`sudo xl pci-list-assignable-devices | grep $local_dev | wc -l`
if [ $count -gt 1 ]; then
	echo "$local_dev has multiple matches, be more specific"
	exit 2
elif [ $count -lt 1 ]; then
	echo "$local_dev is not present in dom0, maybe it's already attached?"
	exit 2
fi
local_dev=`sudo xl pci-list-assignable-devices | grep $local_dev | awk '{ print $1 }'`
echo "mapped $2 to $local_dev"

sudo xl pci-attach $domain $local_dev

pci-detach.sh

##/bin/sh
########
# Detach pci device from vm in safe way
#
# usage: pci-detach <domain> <pci-device>
#
# Will attempt to partially match device names, e.g., "1a" -> "0000:00:1a.0"
domain=$1
local_dev=$2

if [ $# -ne 2 ]; then
	echo "usage: $0 <doman> <pci_dev>"
	exit 1
fi

# determine pci device name inside vm
count=`sudo xl pci-list $domain | grep $local_dev | wc -l`
if [ $count -gt 1 ]; then
	echo "$local_dev has multiple matches, be more specific"
	exit 2
elif [ $count -lt 1 ]; then
	echo "$local_dev is not present in dom0"
	exit 2
fi

vm_dev=`sudo xl pci-list $domain | grep $local_dev | awk '{ print $1 }'`
local_dev=`sudo xl pci-list $domain | grep $local_dev | awk '{ print $2 }'`
echo "mapped $local_dev to $vm_dev"

# detach driver
qvm-run $domain "echo BDF > /sys/bus/pci/devices/0000:00:$vm_dev/driver/unbind"
sudo xl pci-detach $domain $local_dev