On Tue, 2008-10-21 at 08:57 +0200, Wolfgang Grandegger wrote:
> Ben Nizette wrote:
> >
> > As in examples of the userspace half? Unfortunately uio-smx isn't ready
> > to fly thanks to some significant production delays but the userspace
> > half of the Hilscher CIF driver can be found at
> > http://www.osadl.org/projects/downloads/UIO/user/
>
> As I see it, mainly the license conditions attract people to use UIO.
> Performance is not that important.
>
Ohw god I hope not. If people want to keep their stuff proprietary they
can supply binary-only modules a la nvidia. Thankfully such nonsense is
fairly uncommon these days.
UIO is not a set of hooks for general userspace drivers, it can't
replace 99% of kernel drivers. It exists to allow easy and
high-performance interfacing to a particular family of devices - those
which simply need to shift data around and have an interrupt telling you
when they're done.
--Ben.
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