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#!/bin/bash
# -----------------------------------------------------------------------------
#
# Copyright (c) 2017..2021 bwLehrpool-Projektteam
#
# This program/file is free software distributed under the GPL version 2.
# See https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
#
# If you have any feedback please consult https://bwlehrpool.de and
# send your feedback to support@bwlehrpool.de.
#
# General information about bwLehrpool can be found at https://bwlehrpool.de
#
# -----------------------------------------------------------------------------
# systemd-qemu_env
# - This is the preparation script for the configuration of QEMU on Linux.
################################################################################
source /opt/openslx/vmchooser/run-virt-includes/vmchooser_runvirt_functions.inc
source /opt/openslx/vmchooser/plugins/qemukvm/includes/kernel-cmdln.inc
source /opt/openslx/vmchooser/plugins/qemukvm/includes/passthrough-pci.inc
source /opt/openslx/vmchooser/plugins/qemukvm/includes/passthrough-mdev.inc
#
# setup PCI devices for passthrough if Intel PCI passthrough is enabled
#
if passthrough_pci_enabled; then
# check if passthrough is configured properly
if ! passthrough_pci_check; then
slxlog --echo "qemu" "PCI device passthrough is enabled but not setup properly!"
exit 1;
fi
# allow access to passthrough IOMMU devices from libvirt-passthrough group
chown -R root:libvirt-passthrough /dev/vfio/* || slxlog --echo "qemu" "Could not set owner and group for 'vfio' IOMMU devices!"
chmod -R 660 /dev/vfio/* || slxlog --echo "qemu" "Could not change access mode for 'vfio' IOMMU devices!"
fi
#
# create and setup Intel GVT-g mediated device instance for passthrough if Intel GVT-g is enabled
#
if passthrough_mdev_enabled; then
# check if passthrough is configured properly
if ! passthrough_mdev_check; then
slxlog --echo "qemu" "mediated device passthrough is enabled but not setup properly!"
exit 2;
fi
# load required kernel modules for mediated device passthrough
modprobe "vfio-mdev" 2> /dev/null \
|| modprobe "mdev" \
|| { slxlog --echo "qemu" "Could not load vfio mdev kernel module!"; exit 3; }
modprobe "kvmgt" || { slxlog --echo "qemu" "Could not load 'kvmgt' kernel module!"; exit 4; }
# get Intel integrated GPU mediated device for passthrough
pt_mdev_device="$(passthrough_mdev_device_get_intel_igd)"
if [ -z "${pt_mdev_device}" ]; then
slxlog --echo "qemu" "Could not find any Intel integrated GPU with mediated device (Intel GVT-g) support!"
exit 5;
fi
# get Intel GVT-g mediated device instance type
pt_mdev_device_type="$(passthrough_mdev_type_get "${pt_mdev_device}")"
if [ -z "${pt_mdev_device_type}" ]; then
slxlog --echo "qemu" "Could not obtain the mediated device instance type of the Intel integrated GPU (${pt_mdev_device})"
exit 6;
fi
# generate UUID for Intel GVT-g mediated device instance
pt_mdev_uuid="$(uuidgen)"
# create Intel GVT-g mediated device instance
if ! passthrough_mdev_instance_create "${pt_mdev_device}" "${pt_mdev_device_type}" "${pt_mdev_uuid}"; then
slxlog --echo "qemu" "Failed to create Intel GVT-g mediated device instance!"
fi
fi
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