On Monday, May 23, 2011 3:08:05 pm Andrew Boyer wrote: > > On May 23, 2011, at 10:32 AM, John Baldwin wrote: > > > On Monday, May 23, 2011 10:13:41 am Philip Soeberg wrote: > >> I would also expect the ixgbe.c driver to do a quick resource_disabled() > >> in it's attach() function, so that we can disable specific adapters > >> through kenv hint.ix.0.disabled=1.. > > > > That is not universally supported (i.e. it's not a part of new-bus > > specifically). For buses that support hinted devices, they do all generally > > support being able to disable a hinted device, but disabling bus- enumerated > > devices is not generally supported. > > > > FYI, I submitted a patch to Jack to add this in all of the e1000/ixgbe drivers. Setting a disabled="1" hint causes the attach to fail with ENXIO. I don't know if it's 'correct' or not but it serves a purpose in our testing and I thought it would be useful for others.
One patch I have had for a while is a way to disable specific PCI devices, but that's not quite the same thing as it disables all drivers for a given device. (It adds support for a 'hw.pci<domain>.<bus>.<slot>.<function>.disabled=1' tunable). -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
