1# SPDX-License-Identifier: GPL-2.0-or-later 2 3readonly DEVICES_DIR="${TMPDIR:-/tmp}/vfio-selftests-devices" 4 5function write_to() { 6 # Unfortunately set -x does not show redirects so use echo to manually 7 # tell the user what commands are being run. 8 echo "+ echo \"${2}\" > ${1}" 9 echo "${2}" > ${1} 10} 11 12function get_driver() { 13 if [ -L /sys/bus/pci/devices/${1}/driver ]; then 14 basename $(readlink -m /sys/bus/pci/devices/${1}/driver) 15 fi 16} 17 18function bind() { 19 write_to /sys/bus/pci/drivers/${2}/bind ${1} 20} 21 22function unbind() { 23 write_to /sys/bus/pci/drivers/${2}/unbind ${1} 24} 25 26function set_sriov_numvfs() { 27 write_to /sys/bus/pci/devices/${1}/sriov_numvfs ${2} 28} 29 30function get_sriov_numvfs() { 31 if [ -f /sys/bus/pci/devices/${1}/sriov_numvfs ]; then 32 cat /sys/bus/pci/devices/${1}/sriov_numvfs 33 fi 34} 35 36function set_driver_override() { 37 write_to /sys/bus/pci/devices/${1}/driver_override ${2} 38} 39 40function clear_driver_override() { 41 set_driver_override ${1} "" 42} 43