How do I turn on DMA for ide-scsi DVD drives

[spmirowski <spmirowski shaw ca>]

Hello,

Back when Fedora handled disc drives as ide, I would use hdparm to turn 
on DMA.  Now that Fedora 8 seems to run them as SCSI devices, hdparm 
can't tell them to turn on DMA.  Any ideas how to get them blazing fast 
again?

Thanks,

Stephen