[parisc-linux] C3000 and IDE DMA support

[Alan Cox]

On Mer, 2003-08-27 at 18:36, M. Grabert wrote:
> beast:/home/xam# hdparm -i /dev/hda
>  DMA modes:  mdma0 mdma1 *mdma2

So its tuned for DMA2 (doesn't mean its not using PIO..)

> Mhh, also "hdparm -d" shows that the "DMA mode" of the hard disk is
> "enabled", but I really have the feeling it isn't.

The crash is also curious - I wonder if parisc is either bouncing
every DMA buffer and copying it for some reason, or its failing DMA
by a path other platforms don't hit which isnt cleaning up right.