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Re: which dma mode?



On Tue, Feb 02, 2016 at 02:46:46AM +0000, Darren wrote:
> Drive states 'using dma'  Which one?And how to I toggle it?
> I tried numerous man pages and google before writing here.  
> 
> wd0(ahcisata0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)

It's ahcisata's DMA. And you can't turn it off from the OS, ahci can't
work without DMA.
You may be able to turn off AHCI in the BIOS, in this case the controller
may show up as standart pciide controller.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--


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