#!/usr/bin/env bash # # Detach and rebind a PCI device to a PCI kernel driver # # Author: Steffen Vogel # SPDX-FileCopyrightText: 2017 Institute for Automation of Complex Power Systems, RWTH Aachen University # SPDX-License-Identifier: Apache-2.0 if [ "$#" -ne 2 ]; then echo "usage: $0 BUS:DEV:FNC DRIVER" exit 1 fi BDF=$1 DRIVER=$2 VENDOR=$(cut -b3- /sys/bus/pci/devices/${BDF}/vendor) DEVICE=$(cut -b3- /sys/bus/pci/devices/${BDF}/device) SYSFS_DEVICE=/sys/bus/pci/devices/${BDF} SYSFS_DRIVER=/sys/bus/pci/drivers/${DRIVER} echo "Device: $VENDOR $DEVICE $BDF" if [ -L "${SYSFS_DEVICE}/driver" ] && [ -d "${SYSFS_DEVICE}/driver" ]; then echo ${BDF} > ${SYSFS_DEVICE}/driver/unbind fi echo "${VENDOR} ${DEVICE}" > ${SYSFS_DRIVER}/new_id echo "${BDF}" > ${SYSFS_DRIVER}/bind echo "${VENDOR} ${DEVICE}" > ${SYSFS_DRIVER}/remove_id