Le Wed, 30 Sep 2009 13:50:22 +0800,
Peter Teoh <[email protected]> a écrit :

> generally, port i/o programming is always slower than mmio, why don't
> u consider that option?

Well, it's rarely an option. Either the device is programmed through
PIO *or* through MMIO. And I suspect that most ISA devices can only be
programmed through PIO.

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers and embedded Linux development,
consulting, training and support.
http://free-electrons.com

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