Hi list,
I've been playing with some KVM guests on KVM 83 on a RedHat 2.6.18 kernel
(2.6.18-164.15.1.el5).
I tried to pass through a USB TV tuner device with a hostdev option in the
guest's configuration. The guest can see the device but the driver
(dvb_usb_dib0700) refuses to initialise it since it detected QEMU emulating a
USB 1.1 host and needs USB 2.0:
dvb-usb: This USB2.0 device cannot be run on a USB1.1 port. (it lacks a
hardware PID filter)
Instead, and as this is the only USB device on the host, I tried to pass
through the whole USB host controller to the guest via PCI pass through.
There's three functions provided by the USB controller's PCI device:
01:08.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 62)
01:08.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 62)
01:08.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 65)
so I tried to pass the USB 2.0 (01:08.2) function to the guest but received an
error when trying to start the guest:
error: this function is not supported by the hypervisor: No PCI reset
capability available for 0000:01:08.2
I figured this was because I was only trying to pass one function of a
multi-function device, so I tried passing all three functions concurrently but
received the same 'PCI reset capability' error.
So, is there a way to emulate a USB 2.0 / EHCI controller in a guest and pass
my USB device through? or alternatively, can anyone suggest how to get the PCI
device(s) passed through for the physical USB controller?
Thanks,
Tom--
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