Re: [Xen-devel] USB in xenolinux

[Rolf N. <rol...@in...>]

what you are trying to do is not yet supported. at the moment you cannot
run arbitrary device drivers in guest operating systems. we are in the
middle of implementing this and the code in unstable does not work, in
particular the interrupt 'virtualisation' (hence the lack messages in
your output). there is at least another big bug in the code in -unstable
but even with a fix this does not yet work in my development tree.

rolf

On Thu, 2004-03-18 at 11:10, Sean Atkinson wrote:
> Hi,
> 
> I'm trying to add USB support to xenolinux for DOM0.
> 
> I've hacked arch/xeno/config.in to source Config.in files for usb and
> input, added pci_alloc_consistent and pci_free_consistent to
> arch/xeno/kernel/i386_ksyms.c, and enabled building PCI and USB in my
> config.  I can build the kernel and modules fine, and it even boots.
> 
> I've had to move the host controller (usb-uhci) from a module into the
> kernel since it missed the above PCI symbols.  I can't figure this out,
> since I can list the symbols in xenolinux.gz, System.map, and
> /proc/ksyms.  However depmod only works with "-F System.map" even when
> running the xenolinux kernel.  Seems there's some discrepancy between
> the live and built system maps?
> 
> Anyway dmesg looks good:
> 
> usb.c: registered new driver usbdevfs
> usb.c: registered new driver hub
> host/usb-uhci.c: $Revision: 1.275 $ time 11:12:36 Mar 18 2004
> host/usb-uhci.c: High bandwidth mode enabled
> host/usb-uhci.c: USB UHCI at I/O 0xd400, IRQ 11
> host/usb-uhci.c: Detected 2 ports
> usb.c: new USB bus registered, assigned bus number 1
> startup_physirq_event 11
> startup_physirq_event 11: setup event handler
> hub.c: USB hub found
> hub.c: 2 ports detected
> host/usb-uhci.c: USB UHCI at I/O 0xd800, IRQ 11
> host/usb-uhci.c: Detected 2 ports
> usb.c: new USB bus registered, assigned bus number 2
> hub.c: USB hub found
> hub.c: 2 ports detected
> host/usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
> 
> Which is similar to regular Linux output, except it's missing lines like
> this:
> 
> PCI: Found IRQ 11 for device 00:07.2
> PCI: Sharing IRQ 11 with 00:07.3
> 
> Unfortunately although modules input, hid, keybdev and mousedev are
> loaded on boot as usual, no external devices are visible in Xen. 
> Insertion and removal are ignored, the key locks don't light on my
> keyboard, and only the internal hubs are listed by lsusb and
> /proc/bus/usb/devices.
> 
> Any thought please?
> 
> Cheers,
> 
> Sean.