intel D865PERL and DMA for disks (IDE)?

[Erik Steffl]

  I am trying to set the DMA for ide disks but get the following error:

  jojda:/home/erik# hdparm -d 1 /dev/hda

/dev/hda:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Operation not permitted
 using_dma    =  0 (off)

  is it because it's not supported on given chipset or is there 
something I can do?

  debian unstable
  2.4.21-ac4 (+ libata5 patches from Jeff Garzik)
  Intel D865PERL motherboard

  there are only two kernel options that I can see are relevant to 
chipset I use:

CONFIG_BLK_DEV_PIIX=m
CONFIG_SCSI_ATA_PIIX=y

  TIA

	erik


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