Call for testers: Apple ATA DMA

[Nathan Whitehorn]

Nathan Whitehorn wrote:
> Maxim Sobolev wrote:
>> Nathan,
>>
>> Do you have any news regarding the patch in question? I hope you did 
>> not give up, the lack of ATA DMA support is IMHO probably the biggest 
>> issue for the FreeBSD on PowerMacs now. The hardware is very 
>> attractive for SOHO applications, so that having this feature is 
>> important.
> Right now, modes up to WDMA2 work. The UDMA modes cause hangs for 
> reasons not entirely clear. I'm investigating it, but am in the 
> Netherlands at the moment and it will have to wait until I get back.

I now have UDMA modes working on my Shasta controller -- there was a 
stupid bug where I forgot to set the device to accept transfers in the 
selected mode. Please give this patch a test: I expect that UDMA modes 
now work everywhere.

http://people.freebsd.org/~nwhitehorn/apple-ata-dma.patch
-Nathan