From owner-freebsd-questions  Fri May 25  8:54: 4 2001
Delivered-To: freebsd-questions@freebsd.org
Received: from smtpproxy1.mitre.org (mb-20-100.mitre.org [129.83.20.100])
	by hub.freebsd.org (Postfix) with ESMTP id 83CC137B424
	for <freebsd-questions@freebsd.org>; Fri, 25 May 2001 08:53:57 -0700 (PDT)
	(envelope-from jandrese@mitre.org)
Received: from avsrv1.mitre.org (avsrv1.mitre.org [129.83.20.58])
	by smtpproxy1.mitre.org (8.9.3/8.9.3) with ESMTP id LAA04731
	for <freebsd-questions@freebsd.org>; Fri, 25 May 2001 11:53:54 -0400 (EDT)
Received: from MAILHUB1 (mailhub1.mitre.org [129.83.20.31])
	by smtpsrv1.mitre.org (8.9.3/8.9.3) with ESMTP id LAA03426
	for <freebsd-questions@freebsd.org>; Fri, 25 May 2001 11:53:54 -0400 (EDT)
Received: from dhcp-105-164.mitre.org (128.29.105.164) by mailhub1.mitre.org with SMTP
        id 6598397; Fri, 25 May 2001 11:53:24 -0400
Message-ID: <3B0E8011.B57B1CEC@mitre.org>
Date: Fri, 25 May 2001 11:53:53 -0400
From: Jason Andresen <jandrese@mitre.org>
Organization: The MITRE Corporation
X-Mailer: Mozilla 4.75 [en]C-20000818M  (Windows NT 5.0; U)
X-Accept-Language: en
MIME-Version: 1.0
To: freebsd-questions@freebsd.org
Subject: ATA DMA enabling problem with IBM DAQA on an PIIX3
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-questions.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo?subject=subscribe%20freebsd-questions>
List-Unsubscribe: <mailto:majordomo?subject=unsubscribe%20freebsd-questions>
X-Loop: FreeBSD.ORG

Hello,
	I'm trying to enable DMA on my HD with FreeBSD 4.3, and it just
doesn't seem to be working correctly.  

Here's the dmesg output:
...
atapci0: <Intel PIIX3 ATA controller> port 0xffa0-0xffaf at device 7.1
on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
...
ad0: 3098MB <IBM-DAQA-33240> [6296/16/63] at ata0-master PIO4
acd0: CDROM <CD-ROM CDU311> at ata1-master using PIO3

sysctl shows the DMA is turned on, but it doesn't work for some reason:
hw.ata.ata_dma: 1
hw.ata.wc: 0
hw.ata.tags: 0
hw.ata.atapi_dma: 0
hw.atamodes: pio,---,pio,---,

According to the spec, the harddrive should support WDMA, and I've seen
a 
post in the archives where someone had this drive doing WDMA2. 
According
to the ata manpage, the PIIX3 supports UDMA, so where is the problem?  
Do I have to set a magic jumper on the HD itself?

The harddrive shouldn't count as an ATAPI device right?  I doubt the
CD-ROM
supports DMA, but it might be one of the kinds that lies about what it
can
support, so I'm hesitant to enable atapi dma. 

Does anybody have any idea what I might have to do to enable DMA on the 
harddrive?


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message