How to hotplug a PCI device (such as VF) on FreeBSD

Ian Lepore ian at freebsd.org
Mon Mar 25 14:06:00 UTC 2019


On Mon, 2019-03-25 at 08:49 +0000, Hongxiong Xian (Wicresoft North
America Ltd) wrote:
> Hi,
> 
> I'm looking for a way to refresh the pci device list.
> In Linux, we can remove a particular pci device, and then after
> preforming a "rescan" the device will appear again.
> For example, disable/rescind PCI (such as VF) :
> echo 1 >  /sys/bus/pci/devices/0001\:00\:02.0/remove
> # Get the device back
> echo 1 > /sys/bus/pci/rescan
> 
> I'm looking for a similar way in FreeBSD. Does the FreeBSD support
> the hotplug of a PCI device?  Thanks in advance!
> 
> 

I think 'devctl rescan' will do that, 'man devctl' for details.

-- Ian



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