56 lines
1.8 KiB
Bash
56 lines
1.8 KiB
Bash
|
#!/bin/bash
|
||
|
|
# Copyright 2014 Alexander von Gluck IV <kallisti5@unixzen.com>
|
||
|
|
# Released under the terms of the MIT license.
|
||
|
|
|
||
|
|
# Prepare a graphics card to be attached to a qemu virtual machine
|
||
|
|
# Requires Linux, and IOMMU support enabled on the motherboard.
|
||
|
|
|
||
|
|
echo ""
|
||
|
|
echo "Introduction"
|
||
|
|
echo " This script will unhook the specified graphics card from the operating system so it can"
|
||
|
|
echo " be safely attached to a virtual machine with IOMMU"
|
||
|
|
echo ""
|
||
|
|
echo "Installed graphics cards:"
|
||
|
|
echo "-----------------------------------------"
|
||
|
|
echo "Slot Type Vendor"
|
||
|
|
lspci | grep "VGA compatible"
|
||
|
|
echo "-----------------------------------------"
|
||
|
|
|
||
|
|
echo ""
|
||
|
|
echo "WARNING: Selecting your current video device will result in it no longer being used by"
|
||
|
|
echo "the operating system. Please ensure you choose your secondary video card."
|
||
|
|
echo ""
|
||
|
|
echo "Please enter the slot of the graphics card you wish to attach to a virtual machine:"
|
||
|
|
echo -n " > "
|
||
|
|
|
||
|
|
read PCISLOT
|
||
|
|
|
||
|
|
lspci -s $PCISLOT &> /dev/null
|
||
|
|
if [ $? -ne 0 ]; then
|
||
|
|
echo "Error: Invalid PCI SLOT! ($PCISLOT)"
|
||
|
|
exit 1
|
||
|
|
fi;
|
||
|
|
|
||
|
|
PCIID=$(lspci -n -s $PCISLOT | awk '{ print $3 }')
|
||
|
|
VENDOR=$(echo "$PCIID" | cut -d':' -f1)
|
||
|
|
DEVICE=$(echo "$PCIID" | cut -d':' -f2)
|
||
|
|
|
||
|
|
echo ""
|
||
|
|
|
||
|
|
sudo -v
|
||
|
|
|
||
|
|
# Enable unsafe assigned interrupts
|
||
|
|
sudo su -c "echo 1 > /sys/module/kvm/parameters/allow_unsafe_assigned_interrupts"
|
||
|
|
sudo su -c "modprobe pci_stub"
|
||
|
|
|
||
|
|
# cleanup (just incase)
|
||
|
|
sudo su -c "echo 0000:$PCISLOT > /sys/bus/pci/drivers/pci-stub/unbind"
|
||
|
|
sudo su -c "echo $VENDOR\ $DEVICE > /sys/bus/pci/drivers/pci-stub/remove_id"
|
||
|
|
|
||
|
|
# bind
|
||
|
|
sudo su -c "echo $VENDOR\ $DEVICE > /sys/bus/pci/drivers/pci-stub/new_id"
|
||
|
|
sudo su -c "echo 0000:$PCISLOT > /sys/bus/pci/devices/0000:$PCISLOT/driver/unbind"
|
||
|
|
sudo su -c "echo 0000:$PCISLOT > /sys/bus/pci/drivers/pci-stub/bind"
|
||
|
|
|
||
|
|
echo "Unbinding complete. Feel free to use the GPU in qemu/kvm via '-device pci-attach,host=$PCISLOT'"
|