Re: [Xen-users] PCIPassthrough usb controller

[chris <tknchris@xxxxxxxxx>]

If you are using qemu for your passthrough that would be your
performance problem right there.... Did you try pvusb? VT-d?

- chris

On Fri, Jun 4, 2010 at 10:55 AM, Helmut Wieser <helmut.wieser@xxxxxxxx> wrote:
> Hi,
>
> I used qemu-dm USB 1.1 passthrough to use a USB mouse on a windows XP domU.
> I even installed the gplpv drivers, but performance is still lacking.
> Next I wanted to passthrough the whole USB controller using PCI passthrough,
> as described here http://wiki.xensource.com/xenwiki/XenUSBPassthrough.
> I've hidden the PCI devices using xen-pciback.hide kernel parameters.
>
> I'm running xen-4.0.0 STABLE on a 2.6.31.13 and debian 2.6.32-5-xen-amd64
> kernels, same error happens on both.
>
> xm pci-list-assignable-devices gives
> 0000:0f:00.0
> 0000:00:1a.0
> 0000:00:1a.1
>
> Where 00:1a are the two USB controllers I want to pass through.
> See here:
> lspci -nn|grep USB
> 00:1a.0 USB Controller [0c03]: Intel Corporation 82801JI (ICH10 Family) USB
> UHCI Controller #4 [8086:3a37]
> 00:1a.1 USB Controller [0c03]: Intel Corporation 82801JI (ICH10 Family) USB
> UHCI Controller #5 [8086:3a38]
> (....)
>
> The domU fails to come up, here's the qemu-dm log:
> domid: 1
> config qemu network with xen bridge for  tap1.0 eth0
> Watching /local/domain/0/device-model/1/logdirty/cmd
> Watching /local/domain/0/device-model/1/command
> char device redirected to /dev/pts/1
> qemu_map_cache_init nr_buckets = 10000 size 4194304
> shared page at pfn feffd
> buffered io page at pfn feffb
> Guest uuid = a0fd678b-5d01-7a2a-cc3b-8299b25201e1
> Time offset set 0
> Register xen platform.
> Done register platform.
> platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw
> state.
> xs_read(/local/domain/0/device-model/1/xen_extended_power_mgmt): read error
> medium change watch on `hdc' (index: 1): /dev/cdrom
> I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
> Log-dirty: no command yet.
> xs_read(/local/domain/1/log-throttling): read error
> qemu: ignoring not-understood drive `/local/domain/1/log-throttling'
> medium change watch on `/local/domain/1/log-throttling' - unknown device,
> ignored
> dm-command: hot insert pass-through pci dev
> register_real_device: Assigning real physical device 00:1a.1 ...
> register_real_device: Enable MSI translation via per device option
> register_real_device: Disable power management
> pt_iomul_init: Error: pt_iomul_init can't open file /dev/xen/pci_iomul: No
> such file or directory: 0x0:0x1a.0x1
> pt_register_regions: IO region registered (size=0x00000020
> base_addr=0x0000d021)
> pci_intx: intx=2
> register_real_device: Real physical device 00:1a.1 registered successfuly!
> IRQ type = INTx
> pt_ioport_map: e_phys=c200 pio_base=d020 len=32 index=4 first_map=1
> platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw
> state.
> platform_fixed_ioport: changed ro/rw state of ROM memory area. now is ro
> state.
>
> I haven't tried using pci-stub yet, but I don't think the result will be
> different. What's the problem here?
> My domU works (more or less ;-) )fine without those two PCI devices passed
> through.
>
> regards,
> Helmut
>
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>

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