On Mon, 8 Oct 2001, Gareth Hughes wrote:
> [EMAIL PROTECTED] wrote:
>
> > After reading documentation (and confirming that I already know all the
> > acronyms) and sifting thru driver code I decided to ask on the list, while
> > the people who wrote this stuff can still answer ;)
> >
> > Basically I want to DMA a chunk of video ram into plain RAM. This is
> > useful for: video capture, VBI/closed captioning, taking screen snapshots.
> >
> > I got drm handle, size of the buffer, AGP offset and pointer to the buffer
> > in XFree86. What can I do with this ? At the moment I am mostly concerned
> > with Radeon AIW AGP, but this will spread to other (non AGP) cards.
> >
> > The docs seem to indicate that both XFree and client can use this - it
> > would be really fabulous if clients could just mmap the buffer.
>
> I think it'll be hard to set up and initiate DMA transfers without
> proper hardware documentation. Do you have Radeon specs?
Yes.
Vladimir Dergachev
>
> -- Gareth
>
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