1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
Usb passthrough of devices plugged to AMD FCH USB OHCI Controller failing on q35.
I'm trying to setup a q35 vm with windows 7 guest for vga passthrough. The machine works well for this purpose, but the usb devices passed to the vm does not. I receive the following errors on screen:
qemu-system-x86_64: libusb_release_interface: -4 [NO_DEVICE]
libusb: error [_open_sysfs_attr} open
/sys/bus/usb/devices/3-5/bConfigurationValue failed ret=-1 errno=2
qemu-system-x86_64: libusb_release_interface: -4 [NO_DEVICE]
libusb: error [_open_sysfs_attr} open
/sys/bus/usb/devices/4-1/bConfigurationValue failed ret=-1 errno=2
Disabling IRQ #18
Disabling IRQ #17
And from the system log I can see the following:
Oct 13 20:13:25 koalita kernel: vfio-pci 0000:01:00.1: enabling device (0400 -> 0402)
Oct 13 20:13:29 koalita kernel: usb 3-5: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:30 koalita kernel: usb 4-1: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:30 koalita kernel: usb 10-2: reset low-speed USB device number 2 using xhci_hcd
Oct 13 20:13:31 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:31 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:31 koalita kernel: usb 3-5: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:31 koalita kernel: usb 10-2: reset low-speed USB device number 2 using xhci_hcd
Oct 13 20:13:32 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:32 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:32 koalita kernel: usb 4-1: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:33 koalita kernel: usb 3-5: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:33 koalita kernel: usb 4-1: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:34 koalita kernel: usb 3-5: reset low-speed USB device number 2 using ohci-pci
Oct 13 20:13:34 koalita kernel: usb 10-2: reset low-speed USB device number 2 using xhci_hcd
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:35 koalita kernel: usb 10-2: reset low-speed USB device number 2 using xhci_hcd
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
Oct 13 20:13:35 koalita kernel: usb 10-2: ep 0x1 - rounding interval to 64 microframes, ep desc says 80 microframes
I tried to any combination of usb devices, and even disabling the ICH9 usb devices to make the setup looks close to the 440fx machine that is working for me.
Version of qemu is 2.2.1(all newer versions fails on usb passthrough, even in 440fx machines), and kernel is 4.1.8.
The script to launch it is the following:
qemu-system-x86_64 -enable-kvm -M q35 -vga none -cpu host -smp 3,cores=3,threads=1 -m 6144 \
-L /usr/x86_64-pc-linux-gnu/usr/share/qemu \
-nodefaults -nodefconfig \
-device ioh3420,multifunction=on,id=pcie \
-device vfio-pci,host=01:00.0,addr=1c.0,x-vga=on,multifunction=on,bus=pcie \
-device vfio-pci,host=01:00.1,addr=1c.1,bus=pcie \
-netdev user,id=user.0 -device virtio-net-pci,netdev=user.0 \
-device usb-ehci,id=ehci -device nec-usb-xhci,id=xhci \
-usb -usbdevice host:03f0:134a -usbdevice host:03f0:0024 -usbdevice host:0079:0006 \
-drive file=q35_win7.img,format=raw,cache=none,aio=native,if=virtio
Thanks!
|