Asynchronus crypto API

Hello,

recently I read the documentation in Documentation/crypto/ to learn
something about the Linux crypto API internals. There I read the
following sentence

"Support for hardware crypto devices via an asynchronous interface is
under development."

Since this sentence is present at least since kernel 2.6.0 I would like
to ask what the current state in the development of that API is?
Is somebody still working on that API or are there some existing ideas
for that which want to be implemented? I would like to help out with
that if the help is needed.
Background: I recently bought a HIFN crypto card and would like to use
it under Linux without the need to use some external patchsets :)

Joerg

-- 
Joerg Roedel
Operating System Research Center
AMD Saxony LLC & Co. KG