Linux-kernel mailing list archive 1997-47,: Re: Triton DMA

# Re: Triton DMA

Shaw Carruthers (shaw@shawc.demon.co.uk)
Sat, 29 Nov 1997 12:44:35 +0000 (GMT)

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On Fri, 28 Nov 1997, mlord wrote:

> You can still turn it on (hdparm -d1), and it will mostly work
> but without full error detection/correction.
>

In this case is it using standard DMA (as in -X34 )

> > OTOH linux and the bios both start my ST51270A on pio 4, which seems
> > clearly correct as turning on DMA gives occasional timing errors.
>
> Linux does NOT set PIO modes on drives (unless you use hdparm to do it),
> so I am not sure what you meant by that.

What I meant was that Linux disables DMA on boot, so the drive defaults to
its fastest PIO mode.

    --
    Shaw Carruthers - shaw@shawc.demon.co.uk
    London SW14 7JW UK
    This is not a sig( with homage to Magritte).

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