xen winxp pciback script for radeon 6770 passthrough

peter:~/xen # cat startwindows.bash
#!/bin/bash
# License: GPLv2
# Author: Peter Maloney
. bind_lib.bash

xm sched-credit -d Domain-0 -w 5120

modprobe xen-pciback

bindallback

/etc/init.d/xencommons start
/etc/init.d/xendomains start
/etc/init.d/xend start

xm create /etc/xen/vm/windowsxp2

peter:~/xen # cat bind_lib.bash
#!/bin/bash
# License: GPLv2
# Author: Peter Maloney
# Script to bind devices to pciback (or pci-stub)

find_new_id() {
    device="$1"
    len=${#device}
    if [ "$len" -eq 12 ]; then
        device="${device:5:12}"
    fi
    lspci -n | grep "${device}" | cut -d' ' -f3 | sed -r "s/:/ /"
}

bindstub() {
    device="$1"
    echo "binddevice $device"

    if [ ! -e "/sys/bus/pci/devices/$device" ]; then
        echo "    ERROR: Device does not exist... cancelling"
        return
    fi

    # with pci-stub, you do new_id, then unbind, then bind

    echo "create new_id"
    chmod +w /sys/bus/pci/drivers/pci-stub/new_id
    new_id="$(find_new_id "$device")"
    echo "    echo \"$new_id\" > /sys/bus/pci/drivers/pci-stub/new_id"
    echo "$new_id" > /sys/bus/pci/drivers/pci-stub/new_id

    echo "unbind"
    if [ ! -e "/sys/bus/pci/devices/$device/driver" ]; then
        echo "    no driver to unbind"
    else
        chmod +w "/sys/bus/pci/devices/${device}/driver/unbind"
        echo "    echo -n \"$device\" > \"/sys/bus/pci/devices/$device/driver/unbind\""
        echo -n "$device" > "/sys/bus/pci/devices/$device/driver/unbind"
    fi

    echo "bind"
    chmod +w /sys/bus/pci/drivers/pci-stub/bind
    echo "    echo -n \"$device\" > /sys/bus/pci/drivers/pci-stub/bind"
    echo -n "$device" > /sys/bus/pci/drivers/pci-stub/bind

    echo
}

bindback() {
    device="$1"
    echo "binddevice $device"

    if [ ! -e "/sys/bus/pci/devices/$device" ]; then
        echo "ERROR: Device does not exist... cancelling"
        return
    fi

    # with pci-stub, you do unbind, then new_slot, then bind

    echo "unbind"
    if [ ! -e "/sys/bus/pci/devices/$device/driver" ]; then
        echo "    no driver to unbind"
    else
        chmod +w "/sys/bus/pci/devices/${device}/driver/unbind"
        echo "    echo -n \"$device\" > \"/sys/bus/pci/devices/$device/driver/unbind\""
        echo -n "$device" > "/sys/bus/pci/devices/$device/driver/unbind"
    fi

    echo "create new_slot"
    chmod +w /sys/bus/pci/drivers/pciback/new_slot
    echo "    echo -n \"$device\" > /sys/bus/pci/drivers/pciback/new_slot"
    echo -n "$device" > /sys/bus/pci/drivers/pciback/new_slot

    echo "bind"
    chmod +w /sys/bus/pci/drivers/pciback/bind
    echo "    echo -n \"$device\" > /sys/bus/pci/drivers/pci-stub/bind"
    echo -n "$device" > /sys/bus/pci/drivers/pciback/bind

    echo
}

checkdevice() {
    device="$1"
    ls -l /sys/bus/pci/devices/0000:${device}/driver
}

bindallstub() {
    # vga2
    bindstub "0000:04:00.0"

    # vga2 audio
    bindstub "0000:04:00.1"

    # usb2
    bindstub "0000:00:12.0"
    bindstub "0000:00:12.2"

    # usb3
    bindstub "0000:02:00.0"


    ls -l /sys/bus/pci/devices/{0000:01:00.0,0000:01:00.1,0000:04:00.0,0000:04:00.1,0000:00:12.0,0000:00:12.2,0000:02:00.0}/driver

    xm pci-list-assignable-devices || xl pci-list-assignable-devices
}

bindallback() {
    # vga2
    bindback "0000:04:00.0"

    # vga2 audio
    bindback "0000:04:00.1"

    # usb2
    bindback "0000:00:12.0"
    bindback "0000:00:12.2"

    # usb3
    bindback "0000:02:00.0"


    ls -l /sys/bus/pci/devices/{0000:01:00.0,0000:01:00.1,0000:04:00.0,0000:04:00.1,0000:00:12.0,0000:00:12.2,0000:02:00.0}/driver

    xm pci-list-assignable-devices || xl pci-list-assignable-devices
}