apex: Remove prepare_device_vfio.sh
Now that the same can be done by virtualizationservice, remove
`prepare_device_vfio.sh` helper script.
Test: -
Change-Id: I51c56a4f0b770a86bec66f06c7045f614132285b
diff --git a/apex/Android.bp b/apex/Android.bp
index e04dbd2..f2a0d64 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -122,7 +122,6 @@
],
host_required: [
"vm_shell",
- "prepare_device_vfio",
],
apps: [
"EmptyPayloadApp",
@@ -183,12 +182,6 @@
installable: false,
}
-sh_binary_host {
- name: "prepare_device_vfio",
- src: "prepare_device_vfio.sh",
- filename: "prepare_device_vfio.sh",
-}
-
// Virt apex needs a custom signer for its payload
python_binary_host {
name: "sign_virt_apex",
diff --git a/apex/prepare_device_vfio.sh b/apex/prepare_device_vfio.sh
deleted file mode 100755
index de2d502..0000000
--- a/apex/prepare_device_vfio.sh
+++ /dev/null
@@ -1,176 +0,0 @@
-#!/bin/bash
-
-# Copyright 2023 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# prepare_device_vfio.sh: prepares a device for VFIO assignment by binding a VFIO driver to it
-
-adb="${ADB:="adb"}" # ADB command to use
-vfio_dir="/dev/vfio"
-platform_bus="/sys/bus/platform"
-vfio_reset_required="/sys/module/vfio_platform/parameters/reset_required"
-vfio_noiommu_param="/sys/module/vfio/parameters/enable_unsafe_noiommu_mode"
-vfio_unsafe_interrupts_param="/sys/module/vfio_iommu_type1/parameters/allow_unsafe_interrupts"
-
-function print_help() {
- echo "prepare_device_vfio.sh prepares a device for VFIO assignment"
- echo ""
- echo " Usage:"
- echo " $0 DEVICE_NAME"
- echo " Prepare device DEVICE_NAME for VFIO assignment."
- echo ""
- echo " help - prints this help message"
-}
-
-function cmd() {
- $adb shell $@
-}
-
-function tcmd() {
- trap "echo \"Error: adb shell command '$@' failed\" ; exit 1" ERR
- $adb shell $@
-}
-
-function ensure_root() {
- # Check user id
- if [ $(cmd "id -u") != 0 ]; then
- read -p "Must run as root; restart ADBD? [y/n] " answer
- case $answer in
- [Yy]* )
- $adb root && $adb wait-for-device && sleep 3 || exit 1
- ;;
- * )
- exit 1
- esac
- fi
-}
-
-function check_vfio() {
- cmd "[ -c $vfio_dir/vfio ]"
- if [ $? -ne 0 ]; then
- echo "cannot find $vfio_dir/vfio"
- exit 1
- fi
-
- cmd "[ -d $platform_bus/drivers/vfio-platform ]"
- if [ $? -ne 0 ]; then
- echo "VFIO-platform is not supported"
- exit 1
- fi
-}
-
-function check_device() {
- cmd "[ -d $device_sys ]"
- if [ $? -ne 0 ]; then
- echo "no device $device ($device_sys)"
- exit 1
- fi
-}
-
-function get_device_iommu_group() {
- local group=$(cmd "basename \$(readlink \"$device_sys/iommu_group\")")
- if [ $? -eq 0 ]; then
- echo $group
- else
- echo ""
- fi
-}
-
-function misc_setup() {
- # VFIO NOIOMMU check
- if [ -z "$group" ]; then
- echo "$device_sys does not have an IOMMU group - setting $vfio_noiommu_param"
- tcmd "echo y > \"$vfio_noiommu_param\""
- fi
-
- # Disable SELinux to allow virtualizationmanager and crosvm to access sysfs
- echo "[*WARN*] setenforce=0: SELinux is disabled"
- tcmd "setenforce 0"
-
- # Samsung IOMMU does not report interrupt remapping support, so enable unsafe uinterrupts
- if [ -n "$group" ]; then
- local iommu_drv=$(cmd "basename \$(readlink \"$device_sys/iommu/device/driver\")")
- if [ "$iommu_drv" = "samsung-sysmmu-v9" ]; then
- tcmd "echo y > \"$vfio_unsafe_interrupts_param\""
- fi
- fi
-}
-
-function bind_vfio_driver() {
- # Check if non-VFIO driver is currently bound, ie unbinding is needed
- cmd "[ -e \"$device_driver\" ] && \
- [ ! \$(basename \$(readlink \"$device_driver\")) = \"vfio-platform\" ]"
- if [ $? -eq 0 ]; then
- # Unbind current driver
- tcmd "echo \"$device\" > \"$device_driver/unbind\""
- fi
-
- # Bind to VFIO driver
- cmd "[ ! -e \"$device_driver\" ]"
- if [ $? -eq 0 ]; then
- # Bind vfio-platform driver
- tcmd "echo \"vfio-platform\" > \"$device_sys/driver_override\""
- tcmd "echo \"$device\" > \"$platform_bus/drivers_probe\""
- sleep 2
- fi
-}
-
-function verify_vfio_driver() {
- # Verify new VFIO file structure
- group=$(get_device_iommu_group)
- if [ -z "$group" ]; then
- echo "cannot setup VFIO-NOIOMMU for $device_sys"
- exit 1
- fi
-
- cmd "[ ! -c \"$vfio_dir/$group\" ] || \
- [ ! -e \"$device_driver\" ] || \
- [ ! \$(basename \$(readlink \"$device_driver\")) = \"vfio-platform\" ]"
- if [ $? -eq 0 ]; then
- echo "could not bind $device to VFIO platform driver"
-
- if [ $(cmd "cat $vfio_reset_required") = Y ]; then
- echo "VFIO device reset handler must be registered. Either unset $vfio_reset_required, \
-or register a reset handler for $device_sys"
- fi
- exit 1
- fi
-}
-
-function prepare_device() {
- device="$1"
- device_sys="/sys/bus/platform/devices/$device"
- device_driver="$device_sys/driver"
-
- ensure_root
- check_vfio
- check_device
- group=$(get_device_iommu_group)
- misc_setup
-
- bind_vfio_driver
- verify_vfio_driver
-
- echo "Device: $device_sys"
- echo "IOMMU group: $group"
- echo "VFIO group file: $vfio_dir/$group"
- echo "Ready!"
-}
-
-cmd=$1
-
-case $cmd in
- ""|help) print_help ;;
- *) prepare_device "$cmd" $@ ;;
-esac