Re: [Xen-users] Re: use usb isdn modem in guest

[Stephan Seitz <s.seitz@xxxxxxxxxxxx>]

Mark Hurenkamp schrieb:
> > What you'd need to do is use pciback.hide on dom0 kernel line to hide the
> > pci card from dom0, and add a pci = [ <pcicard id> ] section in your xen
> > domU config. You can use lspci to find out the pcicard id.
> I overlooked that you are using usb, in which case you'd probably be 
> best off
> to dedicate an entire usb card to the domU since usb front/back drivers 
> have
> not been implemented for recent Xen versions.
Due to my own tests, usb is possible if you pciback.hide a complete controller 
chip.
It might also work with only one controller, but I never had success in 
functional usb communication
and system stability by doing so.

As an example, my desktop's lspci shows

00:00.0 Host bridge: Intel Corporation 82975X Memory Controller Hub (rev c0)
00:01.0 PCI bridge: Intel Corporation 82975X PCI Express Root Port (rev c0)
00:03.0 PCI bridge: Intel Corporation 82975X/3010 PCI Express Root Port (rev c0)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition 
Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 
(rev 01)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 
(rev 01)
00:1c.5 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express 
Port 6 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI 
Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI 
Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI 
Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI 
Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI 
Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GH (ICH7DH) LPC Interface Bridge 
(rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller 
(rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE 
Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
01:00.0 VGA compatible controller: nVidia Corporation G72 [GeForce 7300 LE] 
(rev a1)
02:00.0 VGA compatible controller: nVidia Corporation G72 [GeForce 7300 LE] 
(rev a1)
05:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet 
Controller
06:00.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 
30)

i would pciback.hide=(00:1d.0)(00:1d.1)(00:1d.2)(00:1d.3)(00:1d.7)

additionally, i would also blacklist the usb modules (or at least usbcore) in 
dom0

by e.g.
echo "blacklist usbcore" >>/etc/modprobe.d/blacklist

Cheers,


--
Stephan Seitz
Senior System Administrator

*netz-haut* e.K.
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