Godfrey van der Linden writes:
> G'day Andrew (and the Darwin Driver list)
>
> Wow this is a wonderful question and now we can really show of the
> capabilities of IOKit.
>
> There are two main options available, both of which are based on the
> same 'master' driver concept that you are currently using. The
> difference between the two options depend on how much flexibility you
> want with the different drivers that your card supports.
>
Thank you... I'm glad I piqued your interest ;)
I agree that choice 1 is probably best for the reasons you've stated.
I think only about half our customers care about ethernet emulation,
so there's no real need to waste the kernel memory to have a driver
loaded that they're not going to use.
Assuming I go this route, its actually going have to look more like
'mpi+master in one package, and 'ethernet' in another. The mpi+master
functionality is so closely wed in this driver that separating it
would be impractical.
You are correct that we do a cdevsw driver. Since we run on many
other platforms, its much less work to maintain a cdevsw driver.
If you know of a good example of the choice 1 above, I'd love to see
it.
Thanks again for your help.
Drew
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