Franz Von Hahn
2008-Aug-30 11:54 UTC
[Xen-users] How to export an Intel USB-Controller to DomU / Driver tried to write to a read-only configuration space
Hey List! I''m using Fedora 8 (since Fedora 9 doesn''t support Dom0-mode), and i''m really stuck. I want to export an Intel ICH7-USB-Controller to a DomU to attach some devices. When I want to export the device i go this way: rmmod uhci_hcd rmmod ohci_hcd rmmod ehci_hcd modprobe pciback echo -n 0000:00:1d.0 > /sys/bus/pci/drivers/pciback/new_slot echo -n 0000:00:1d.0 > /sys/bus/pci/drivers/pciback/bind echo -n 0000:00:1d.7 > /sys/bus/pci/drivers/pciback/new_slot echo -n 0000:00:1d.7 > /sys/bus/pci/drivers/pciback/bind as lspci says the following: 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) Then I fire up the dom0 with pci = [''00:1d.0'',''00:1d.7''] in the config file Then I check dmesg, which says: pciback 0000:00:1d.0: Driver tried to write to a read-only configuration space field at offset 0xc0, size 2. This may be harmless, but if you have problems with your device: 1) see permissive attribute in sysfs 2) report problems to the xen-devel mailing list along with details of your device obtained from lspci. I''ve tried to do before fireing up the domU echo -n 0000:00:1d.0 > /sys/bus/pci/drivers/pciback/permissive echo -n 0000:00:1d.7 > /sys/bus/pci/drivers/pciback/permissive Then i fired up the domU and then the whole system got stuck, no chance to see any messages So what can I do to get USB working in the domU? Isn''t it possible, to reserve a config space for the driver anywhere? IDs are: 0000:00:1d.0 => Vendor: 0x8086, Device: 0x27c8 0000:00:1d.7 => Vendor: 0x8086, Device: 0x27cc Many Thanks!!! __________________________________________________ Do You Yahoo!? Sie sind Spam leid? Yahoo! Mail verfügt über einen herausragenden Schutz gegen Massenmails. http://mail.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users