Subject: Re: No IDE-DMA after sup today ("no driver support")...
To: None <Havard.Eidnes@runit.sintef.no>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 10/21/1998 11:43:23
On Oct 21, Havard.Eidnes@runit.sintef.no wrote
> Now I'm confused. In the following boot messages, does it indicate
> that DMA is being used?
> pciide0 at pci0 dev 8 function 0: CMD Technology PCI0640
> pciide0: primary channel wired to compatibility mode
> wd0 at pciide0 channel 0 drive 0: <ST51270A>
> wd0: using 32-sector pio transfers, lba mode
> wd0: 1223MB, 2485 cyl, 16 head, 63 sec, 512 bytes/sect x 2504880 sectors
> wd0: PIO mode 4, DMA mode 2
> wd1 at pciide0 channel 0 drive 1: <QUANTUM LPS540A>
> wd1: using 8-sector pio transfers, lba mode
> wd1: 516MB, 1120 cyl, 16 head, 59 sec, 512 bytes/sect x 1057280 sectors
> wd1: PIO mode 3, DMA mode 1
> pciide0: secondary channel wired to compatibility mode
> pciide0: secondary channel ignored (disabled)
No DMA is not used. The PCI0640 can't do DMA (unfortunably. I have
several motherboards with a 0640 :(
But your disks are DMA capable.
Manuel Bouyer, LIP6, Universite Paris VI. Manuel.Bouyer@lip6.fr