Date: Wed, 15 Mar 2000 19:50:03 -0800 (PST) From: Chris Piazza <cpiazza@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/17173: 4.0-20000214-CURRENT: ata with Intel ICH ATA-66 -> UDMA33 Message-ID: <200003160350.TAA38353@freefall.freebsd.org>
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The following reply was made to PR kern/17173; it has been noted by GNATS.
From: Chris Piazza <cpiazza@FreeBSD.org>
To: larse@isi.edu
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: kern/17173: 4.0-20000214-CURRENT: ata with Intel ICH ATA-66 -> UDMA33
Date: Wed, 15 Mar 2000 19:43:54 -0800
On Fri, Mar 03, 2000 at 06:27:54PM -0800, larse@isi.edu wrote:
>
> >Description:
> For some reason, the ata driver only supports UDMA33 on an Intel ICH
> ATA-66 controller together with an IBM-DPTA-372730 drive. Both drive
> and controller should be UDMA66-capable.
>
>
> Remember that in order to use UDMA4 mode you have to use a special 80
> conductor cable, and the driver tries to determine if you have such a ca-
> ble attached before setting UDMA4 mode.
>
> I'm *assuming* our machine has such a cable (it's a brand-new Dell
> workstation) - in any case, how do I verify that?
Hi,
If you want to test that the cable is an ATA66 cable, you have to
boot in verbose mode and check the output of the cblid field.
ata0-master: success setting up UDMA2 mode on PIIX4 chip
ad0: <FUJITSU MPC3102AT E/6204> ATA-3 disk at ata0 as master
ad0: 9765MB (20000536 sectors), 19841 cyls, 16 heads, 63 S/T, 512 B/S
ad0: 16 secs/int, 1 depth queue, UDMA33
ad0: piomode=4 dmamode=2 udmamode=2 cblid=0
Obviously this is on an ATA33 controller without an ATA66 cable.
ata2-master: success setting up UDMA4 mode on HPT366 chip
ad4: <IBM-DJNA-371350/J76OA30K> ATA-4 disk at ata2 as master
ad4: 12949MB (26520480 sectors), 28064 cyls, 15 heads, 63 S/T, 512 B/S
ad4: 16 secs/int, 32 depth queue, UDMA66
ad4: piomode=4 dmamode=2 udmamode=4 cblid=1
Please reply with your findings so we know where to proceed from here.
Thanks.
-Chris
--
cpiazza@jaxon.net cpiazza@FreeBSD.org
Abbotsford, BC, Canada
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