Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 03 Jan 2002 02:39:49 +0000
From:      ian j hart <ianjhart@ntlworld.com>
To:        Doug White <dwhite@resnet.uoregon.edu>
Cc:        Thilo Mezger <tm@spoiled.org>, stable@freebsd.org
Subject:   Re: RELENG_4_4: PIIX busmastering DMA not supported
Message-ID:  <3C33C475.B9A1F18@ntlworld.com>
References:  <Pine.BSF.4.33.0201021709380.53787-100000@resnet.uoregon.edu>

next in thread | previous in thread | raw e-mail | index | archive | help
Doug White wrote:
> 
> On Wed, 2 Jan 2002, Thilo Mezger wrote:
> 
> > I was wondering if somebody could explain to me why busmastering DMA
> > is not supported in my setup (RELENG_4_4):
> >
> > # dmesg | grep ata
> > atapci0: <Intel PIIX ATA controller> port 0xfcf0-0xfcff at device 1.1 on pci0
> > atapci0: Busmastering DMA not supported
> 
> According to the code, your controller does not claim to support DMA. The
> original PIIX probably didn't support it, thinking about it...
> 
> Check your BIOS settings and verify that you didn't disable DMA at some
> point in the past.
> 
> Doug White                    |  FreeBSD: The Power to Serve
> dwhite@resnet.uoregon.edu     |  www.FreeBSD.org
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-stable" in the body of the message

This should be the 430 FX (triton) chipset which
claims to support WDMA2. IIRC these could be a bit flakey,
unlike the HX (triton II), which actually works ;)

-- 
ian j hart

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




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3C33C475.B9A1F18>