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List: linux-kernel
Subject: Re: Triton DMA
From: Shaw Carruthers <shaw () shawc ! demon ! co ! uk>
Date: 1997-11-29 12:44:35
[Download RAW message or body]
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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