On Thursday 17 March 2005 16:04, Attila Kinali wrote: > On Tue, 15 Mar 2005 17:48:45 -0500 > > Timothy Miller <[EMAIL PROTECTED]> wrote: > > On Tue, 15 Mar 2005 16:39:33 -0500, Daniel Phillips <[EMAIL PROTECTED]> wrote: > > > Hi Timothy, > > > > > > Have you thought about whether this card needs scatter-gather > > > DMA? > > > > It doesn't need it, really. The solution is to make the direct DMA > > buffer only one or two pages. Everything else is done through > > indirect by putting small commands into direct. If an indirect > > buffer is noncontiguous, the kernel can break up the DMA into > > multiple smaller pieces. Problem solved. > > I know from the mga cards how this looks like from a driver > programmers point of view and i don't really like it. > How does s/g access code look like ?
Just for reference, how about describing the mga approach here? Regards, Daniel _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
