Subject: Re: SV: Downgrading from Ultra-DMA to PIO?
To: Jonas =?iso-8859-1?Q?Lind=E9n?= <jonas.linden.7469@student.uu.se>
From: Manuel Bouyer <bouyer@antioche.eu.org>
List: netbsd-users
Date: 09/04/2003 22:33:56
On Thu, Aug 28, 2003 at 06:13:18PM +0200, Jonas Lindén wrote:
> pciide0: bus-master DMA support present
> pciide0: primary channel configured to compatibility mode
> wd0 at pciide0 channel 0 drive 0: <QUANTUM FIREBALL_TM3200A>
> wd0: drive supports 16-sector PIO transfers, LBA addressing
> wd0: 3067 MB, 6232 cyl, 16 head, 63 sec, 512 bytes/sect x 6281856
> sectors
> wd0: 32-bit data port
> wd0: drive supports PIO mode 4, DMA mode 2
> wd1 at pciide0 channel 0 drive 1: <Maxtor 6Y120P0>
> wd1: drive supports 16-sector PIO transfers, LBA addressing
> wd1: 114 GB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 240121728
> sectors
> wd1: 32-bit data port
> wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6
> pciide0: primary channel interrupting at irq 14
> wd0(pciide0:0:0): using PIO mode 4, DMA mode 2 (using DMA data
> transfers)
> wd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using
> DMA data transfers)
> pciide0: secondary channel configured to compatibility mode
> atapibus0 at pciide0 channel 1: 2 targets
> cd0 at atapibus0 drive 1: <FX001DE, , 0B 4> type 5 cdrom removable
> cd0: 32-bit data port
> cd0: drive supports PIO mode 3
> wd2 at pciide0 channel 1 drive 0: <QUANTUM FIREBALLP KA13.6>
> wd2: drive supports 16-sector PIO transfers, LBA addressing
> wd2: 13216 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 27067824
> sectors
> wd2: 32-bit data port
> wd2: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
> pciide0: secondary channel interrupting at irq 15
> wd2(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 4 (Ultra/66) (using

Well, you wd2 drive claims to support Ultra-DMA mode 4. I'd expect a drive
that large to be Ultra/33 capable at last (I don't I've ever seen drives
of 8G or larger not supporting Ultra DMA). wd0 is properly identified as
not Ultra DMA capable.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 24 ans d'experience feront toujours la difference
--