On Thu, Jan 15, 2009 at 08:07:35PM +0200, Yony Yossef wrote: > > Eygene Ryabinkin wrote: > > > ... > > > I wanted to stress only one point: simple 'kldunload <driver>' and > > > 'kldload <driver>' makes devices to flip for Yony's case. > > This means > > > that unless some PCI hotplug stuff is here (which I don't > > believe to > > > be present, because no physical cards are touched and there is > > > actually a small amount of PCI hotplug support in FreeBSD), no > > > physical PCI devices get added or removed from the PCI > > child tree. It > > > looks like that something goes wrong during the PCI tree reprobe on > > > the driver module loading. > > > > > > > BTW: Thanks for looking further at the software layer first. > > > > VIM is a wee bit easier to use than a bus analyzer. > > > > Most motherboards don't support PCI geographical addressing, > > so... I wager it's the network driver code which may be the > > source of the problem, based on your analysis! > > > > If this code just doing a blind bump of an instance count and > > using that as a "unit number"... well, that's OK and expected > > for software virtual devices, but is counter-intuitive for > > something like hardware. > > > > But I don't have any mtnic source, so this is pure > > speculation on my part. > > > > > Correct me if I am wrong, but pci_driver_added from /sys/pci/pci.c > > > will invoke device_get_children() to get the list of the attached > > > devices, and for PCI case the list should be static. > > > > > > > Yup, that's right. > > > > > I guess that when Yony will enable verbose boot and will show us > > > kernel messages from two successive kldunload/kldload sequences, we > > > will get some additional information about what's going on. > > > > > > > Hopefully he will chime in... > > > > [bms does some google searching *before* he thinks about > > throwing his toys out of the pram at the Orignal.Poster.] > > > > ding :-) [a light bulb above bms' head] > > > > So... Yony. you're writing a driver. > > Maybe there's a bug in it? > > That's cool, dude. > > Hope it's a nice card and you plan on sharing the sweets with > > the rest of the class. ;-) > > > > But seriously, please mention that you are writing a driver > > in general questions you might ask about the whole system, > > otherwise, FreeBSD volunteers will run around going "Is core > > code broken?" and that's not so good for community stress > > levels as a whole. > > > > with lemonade, > > BMS > > Sorry for risking the whole community with a massive heart attack Bruce :) > Yes, I am writing a driver and yes, it still has a bug or two I guess.. > About sharing it with the rest of the class, that's something I wanted > to ask you guys: what's the procedure for a 10GigE driver to apply > for the FreeBSD kernel?
Pretty much just get it working, make sure it's licensed under a BSD, MIT, or ISC license (ideally, others are possible, but require more approval), and then find someone to review and commit it or sponsor the maintainer for a commit bit. > Mellanox has started porting it's products to FreeBSD about a year > ago, hoping to see our 10GigE and InfiniBand drivers inbox next year. Excellent. -- Brooks > > Yony > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" >
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