device hints for isa modules
- From: "Constantine A. Murenin" <cnst@xxxxxxxxxxx>
- Date: Tue, 21 Aug 2007 18:08:29 -0400
Dear freebsd-hackers@,
Is there a way to statically compile device hints into an isa(4) module?
From what it looks, there is no place in the source tree to put the hints for isa(4) modules -- you either have to place default hints into GENERIC.hints, implying that the driver will be compiled into a GENERIC kernel, or place it into NOTES. In the former case, having a module is then useless; in the latter, the module simply ain't going to work.
This is complicated further by the fact that changing isa hints after the boot has no effect on isa driver modules that use standard methods of resource acquisition. (Specifically, notice that kenv(1) won't give you an error message when you try to create a new hint or update an existing one, and the new or updated hint will in fact be visible back from kenv(1), but it won't have any effect on bus_alloc_resource(9) calls, thus modules depending on isa hints will fail to find their hardware.)
I'm specifically looking for a solution to a usable module for my lm(4) driver in soc2007/cnst-sensors perforce branch...
Cheers,
Constantine.
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