On Tue, Jul 27, 2010 at 09:23:04AM +0200, Martin Husemann wrote: > On Tue, Jul 27, 2010 at 01:56:23AM +0000, Quentin Garnier wrote: > > "For free" is a subjective thing. I don't think using device_register() > > --which is a MD callback--to pass information between two MI drivers is > > free. > > Well, using a MD callback to attach MD information from ACPI somehow > makes sense to me. Information is just what it is, information. It becomes MD only when something tries to interpret it, and that's the job of the ISA backend through the bus_space functions and the interrupt stuff. > FWIW, what David outlines is pretty close to the way i2c direct config > works in -current. Your point is? In David's scheme, the ichlpc driver has to do the work to attach the pcib driver and said work has to be replicated in every other variant, and you still need a generic variant to attach the actual pcib driver when none of the *pcib drivers match. And after that, the pcib driver will have to know that it might be on an ACPI system and thus can fetch information there. Think what you want, but to me it is nonsense and that's exactly what I am trying to find a solution to here. -- Quentin Garnier - cube%cubidou.net@localhost - cube%NetBSD.org@localhost "See the look on my face from staying too long in one place [...] every time the morning breaks I know I'm closer to falling" KT Tunstall, Saving My Face, Drastic Fantastic, 2007.
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