[Qemu-devel] [Bug 1385934] Re: USB with passthrougth guest cannot enumerate USB host

[MikeFrysinger <vapier@gentoo.org>]

i've attached the `lsusb -v` output for the device.  it is USB 2.0.  the
sysfs speed file shows 480.

the qemu cmdline:
qemu-system-x86_64 \
        -hda images/root \
        -hdb images/var \
        -hdc images/usr \
        -append "root=/dev/hda console=ttyS0 panic=3 init=/ginit" \
        -kernel images/bzImage \
        -nographic \
        -no-reboot \
        -m 512 \
        -enable-kvm \
        -usbdevice host:1307:0163

** Attachment added: "lsusb.txt"
   https://bugs.launchpad.net/qemu/+bug/1385934/+attachment/4257409/+files/lsusb.txt

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https://bugs.launchpad.net/bugs/1385934

Title:
  USB with passthrougth guest cannot enumerate USB host

Status in QEMU:
  New

Bug description:
  Following the guide at http://www.linux-kvm.org/page/USB_Host_Device_Assigned_to_Guest
  Qemu is launched with qemu-system-x86_64 /dev/vgstripe/kvm_wifi -enable-kvm -m 512 -k fr -net nic -net tap,ifname=tap1,script=/bin/ifup.script -kernel /usr/src/linux_git/arch/x86_64/boot/bzImage -append root=/dev/sda -usb -device usb-host,hostbus=1,hostaddr=6
  The USB device does not show and USB stack seems not working
  On the guest:
  dmesg |grep -i usb
  [    1.416966] hub 1-0:1.0: USB hub found
  [    1.420431] usbcore: registered new interface driver usb-storage
  [    1.445374] usbcore: registered new interface driver usbhid
  [    1.446839] usbhid: USB HID core driver
  [    1.863226] usb 1-1: new low-speed USB device number 2 using uhci_hcd
  [    2.126173] usb 1-1: Invalid ep0 maxpacket: 64
  [    2.373161] usb 1-1: new low-speed USB device number 3 using uhci_hcd
  [    2.648112] usb 1-1: Invalid ep0 maxpacket: 64
  [    2.892404] usb 1-1: new low-speed USB device number 4 using uhci_hcd
  [    2.913001] usb 1-1: Invalid ep0 maxpacket: 64
  [    3.161367] usb 1-1: new low-speed USB device number 5 using uhci_hcd
  [    3.180070] usb 1-1: Invalid ep0 maxpacket: 64
  [    3.181633] usb usb1-port1: unable to enumerate USB device
  lsusb
  Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

  On the host:
  lsusb
  Bus 001 Device 006: ID 0457:0163 Silicon Integrated Systems Corp. SiS163U 802.11 Wireless LAN Adapter
  qemu-system-x86_64 --version
  QEMU emulator version 2.1.2, Copyright (c) 2003-2008 Fabrice Bellard

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