> In the current implementation, it (pci.c) scans for all devices at boot time.
> I don't think it would be a big deal to modify the kernel to support hot-plug
> devices, though there should probably be a notification mechanism set up so
> that drivers are notified cleanly when the device has been (or is about to
> be) removed.
I plan to work at it for 2.5. We need:
o Resource manager capable of assigning free addresses to newly
inserted devices. This is already present in 2.3.
o Extend the bus scanner, so that it's able to re-scan specified
slot after a card is inserted. Close to trivial.
o Write drivers for hotplug PCI bridges. Should be easy, but unfortunately
I don't have any machine I can test it on. [Anyone willing to donate
hardware (hint, hint! :)) ?]
o Define some way how drivers can register their initialization
functions to be called when a new card is inserted. We can probably
use the same mechanism as CardBus drivers do.
o Extend kmod to call modprobe with vendor+device ID when a card
is inserted and no internal driver wants to handle it.
See ftp://atrey.karlin.mff.cuni.cz/pub/local/mj/papers/bus.txt.gz
for more inspiration.
Have a nice fortnight
-- Martin `MJ' Mares <mj@ucw.cz> <mj@suse.cz> http://atrey.karlin.mff.cuni.cz/~mj/ "Uncle Ed's Rule of Thumb: Never use your thumb for a rule."- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/