Bind only 1 device to vfio driver that have same vendor/device id's

Eusaphious · 05-17-2015, 05:29 PM

I'm trying to bind a specific USB3.0 controller to the vfio driver and I am not sure how to go about it. I know I can do something like:

Code:

# echo 1b6f 7023 > /sys/bus/pci/drivers/vfio-pci/new_id

and this works just fine however I have 3 of these controllers that have the same vendor/device id's and I want to bind just 1 of them to the vfio driver.

relevant lspci -n output for the 3 USB 3.0 Controllers:

Code:

03:00.0 0c03: 1b6f:7023 (rev 01)  
04:00.0 0c03: 1b6f:7023 (rev 01) 
05:00.0 0c03: 1b6f:7023 (rev 01)

Is there a way to narrow it down to a specific controller? I know I can unbind a specific controller with:

Code:

# echo 0000:04:00.0 > /sys/bus/pci/drivers/xhci_hcd/unbind

And only that specific controller is removed.
But this does not work in reverse to bind (or I dont know what the proper syntax is):

Code:

# echo 04:00.0 > /sys/bus/pci/drivers/vfio-pci/new_id 
-bash: echo: write error: Invalid argument
# echo 0000:04:00.0 > /sys/bus/pci/drivers/vfio-pci/new_id 
-bash: echo: write error: Invalid argument
# echo 0000:04:00.0 > /sys/bus/pci/drivers/vfio-pci/bind 
-bash: echo: write error: No such device
# echo 04:00.0 > /sys/bus/pci/drivers/vfio-pci/bind 
-bash: echo: write error: No such device

Is there anyway to do this?

Thanks

aw_ · 05-19-2015, 09:41 PM

I can't post urls in this forum yet, so go to vfio.blogspot.com and look for part 3 of my how-to series. About mid-way down I address this problem using initramfs scripts and driver_override.

---------- Post added 05-19-15 at 07:42 PM ----------

Quote:

Originally Posted by aw_

I can't post urls in this forum yet, so go to vfio.blogspot.com and look for part 3 of my how-to series. About mid-way down I address this problem using initramfs scripts and driver_override.

And now that I've posted, I should be able to directly link it here