From 64b0d1cc646f793e219d5a8f974a9b09e8fc05c7 Mon Sep 17 00:00:00 2001
From: Jakub Filo <plantroon@plantroon.com>
Date: Thu, 9 Sep 2021 21:13:20 +0000
Subject: [PATCH] Add 'examples/shell/qemu/prepareintelgpupassthrough.sh'

---
 .../shell/qemu/prepareintelgpupassthrough.sh  | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 examples/shell/qemu/prepareintelgpupassthrough.sh

diff --git a/examples/shell/qemu/prepareintelgpupassthrough.sh b/examples/shell/qemu/prepareintelgpupassthrough.sh
new file mode 100644
index 0000000..2a7ebf2
--- /dev/null
+++ b/examples/shell/qemu/prepareintelgpupassthrough.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+set -e
+
+
+function stopvt() {
+	echo "Stopping virtual terminals"
+	for i in /sys/class/vtconsole/*/bind
+	do
+		echo 0 >$i
+	done
+}
+
+function stopsound() {
+	echo "Stopping Intel HDA sound"
+	for i in /sys/module/snd_hda_intel/drivers/pci\:snd_hda_intel/*/remove
+	do
+		echo 1 >$i
+	done
+}
+
+function removemod() {
+	echo "Waiting for everything to settle down"
+	sleep 0.5
+	echo "Removing modules"
+	rmmod snd_hda_intel
+	rmmod i915
+}
+function probepci() {
+	devicestring="$(lspci -nn | grep "VGA compatible")"
+	pciid="$(echo "$devicestring" | grep -o "8086:....")"
+	pciaddr="$(echo "$devicestring" | cut -f 1 -d " ")"
+	modprobe vfio-pci ids=$pciid
+	echo "Probed: $devicestring"
+	echo "run qemu with -device vfio-pci,host=$pciaddr"
+}
+
+stopvt
+stopsound
+removemod
+probepci