Subject: Re: wscons & framebuffers
To: Brett D. Slager <firstname.lastname@example.org>
From: Chris G. Demetriou <email@example.com>
Date: 03/21/1999 23:21:34
"Brett D. Slager" <firstname.lastname@example.org> writes:
> Would the user space bus_space implementation use the device driver d_mmap()
> routine for mapped access, or some other mechanism? What means should be
> used for getting the 'space' descriptions out of the kernel?
a few ioctls, plus d_mmap(), ioctls, and MD access methods as
appropriate. (where d_mmap() of a linear region + pointer
dereferencing might be used for the frame buffer, but you might need
to use bus_space_*() equivalents which either invoke a 'weird' pointer
based access method, or use an MD method, or use ioctl to access the
There's nothing to say that e.g. the 'register region' acts anything
like memory at all.
i wish jason would actually post the prototype spec for those routines
that he indicated he'd already posted... 8-)
Chris Demetriou - email@example.com - http://www.netbsd.org/People/Pages/cgd.html
Disclaimer: Not speaking for NetBSD, just expressing my own opinion.