Call for testers: Apple ATA DMA

[Nathan Whitehorn]

Peter Grehan wrote:
> On an old iMac (macio 0x0025106b), I get a panic if ATA DMA isn't disabled:
> 
> Memory modified after free 0xda6c00(508) val=0 @ 0xda6c00
> panic: Most recently used by GEOM
> 
>  This is after the ad0/acd0 disk messages are displayed.

This is with one of the ATA - macio parts, I assume? Could you tell me 
whether (a) the two are on the same ATA bus, (b) the name of the ATA 
controller in OF (i.e. ata-3 or ata-4), and (c) which modes the driver 
wants to configure for both devices?

I wish I had more hardware to test this on...
-Nathan