via 8237 and above-udma33 problems

[Divacky Roman]

> > 2) if not - how may I tell fbsd to initialize this drive (resp. the
> > channel the drive is attached to) to udma33 instead of the default mode.
> > I want to boot from that drive so I cannot use atacontrol or whatever
> > since it would have hanged before I'd enter user-space system
> > initialization
> 
> Put  hw.ata.ata_dma=0
> /boot/loader.conf

I WANT dma! just not udma100 but udma33... so this is not what I want
I think there should be some
device.hints:dev.ata.adX.mode=blah

which would tell ata driver which mode should be given drive preferably
initialized to...

roman