Re: [OpenBIOS] G3Beige OpenFirmware Tree?

[Mark Cave-Ayland]

On 26/01/13 22:14, Artyom Tarasenko wrote:
> At least something. I haven't looked into the qemu-ppc implementation of cmd646,
> does it support DMA? (qemu-sparc64 doesn't ant that's the reason why
> Linux cmd646 driver fails).

That's a good point. I see there are functions in QEMU's hw/ide/cmd646.c 
called bmdma_read() and bmdma_write() which would suggest that DMA is 
supported?

ATB,

Mark.

G3Beige OpenFirmware Tree?

[Blue Swirl]

On Sun, Jan 27, 2013 at 7:28 AM, Mark Cave-Ayland
 wrote:
> On 26/01/13 22:14, Artyom Tarasenko wrote:
> > At least something. I haven't looked into the qemu-ppc implementation of
> > cmd646,
> > does it support DMA? (qemu-sparc64 doesn't ant that's the reason why
> > Linux cmd646 driver fails).
>
> That's a good point. I see there are functions in QEMU's hw/ide/cmd646.c
> called bmdma_read() and bmdma_write() which would suggest that DMA is
> supported?

Yes. On Sparc64 we'd probably have to implement the IOMMU for DMA to work.
> ATB,
>
> Mark.