In article <4A4B8825-6F3E-11D9-94C9-000A95E95CCE@earthlink.net>
macallan18@earthlink.net wrote:

> To my surprise 
> XFree86 just worked after some fiddling with XF86Config so it might be 
> a good idea to have the SBus framebuffer drivers in XFree86 built on 
> sparc64 - by default it built only the ati driver.

Hmm, good to hear.

> XFree's cgsix driver ( suncg6 ) is unaccelerated but usable, at least 
> it uses the hardware cursor. Adding acceleration shouldn't be too hard 
> though, there are other, sufficiently simple drivers one could use as 
> examples and then there's Xsun.

Maybe we should think about how mmap function should be implemented.
If we will introduce a "new" WSDISPLAYIO_GINFO ioctl, we should not
have WSDISPLAYIO_MODE_DUMBFB and maybe the new ioctl should provide
an offset value to be used to mmap framebuffer memory.
(In cgsix case, CGSIX_RAM_OFFSET should be returned)

I wonder how we should also provide mmap offsets of device dependent
registers for acceleration, though.
---
Izumi Tsutsui
tsutsui@ceres.dti.ne.jp