On Wed, 17 Oct 2001 [EMAIL PROTECTED] wrote:
>
> R C writes:
>
> > On Sat, Oct 13, 2001 at 10:08:50PM +0200, Manuel Teira wrote:
> >
> > Regarding theories on DMA and Mach64 and XFree 4.10:
> >
> > I just finished a module that uses the System DMA unit for video capture
> > transfers, and it works fine under a (highly hacked) XFree 4.1.0 server.
> >
> > System: Dual 550 Celeron, All-in-Wonder (original) PCI, 3D Rage II+.
> > XServer is 4.1.0 with Gatos devel branch. Module is for 2.4 kernel. To use
> > this on another card, you would have to enter the proper PCI id in the
> > code. Oh yes, it uses the secondary register aperture, not the linear
> > mapped aperture, but I don't think it makes a difference.
>
> Thank you very much. I'll try to see what is missing in the GUI DMA test
> in the DRI code.
> At a first glance, I don't remember to have seen a pci_set_master call
> anywhere in the DRI code. It seems important, doesn't it?
I don't think it is. It just makes sure that the card is enabled for
busmaster operation. In my case this is so from the moment the machine
boots.
Vladimir Dergachev
>
>
> >
> > Have not tried GUI dma, but it is quite similar.
> Easier indeed. The directives in the Mach64 Programmer's manual are simpler
> than for the case you're working on.
>
> I'm now at work but impacient to get home and have access to the Mach64 DRI
> code.
>
> Thanks again.
>
> >
> > R C
> >
> > --
> > They said it was *daft* to build a space station in a swamp, but I showed them!
> > It sank unto the swamp. So I built a second space station. That sank into
> > the swamp too. My third space station sank into the swamp. So I built a fourth
> > one. That fell into a time warp and _then_ sank into the swamp. But the fifth
> > one... stayed up! --Monty Python/Babylon 5
>
>
>
>
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