From: Jonathan Lundell <linux@lundell-bros.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org, Samuel Flory <sflory@rackable.com>
Subject: Re: OSB4 issues on 2.4.19-ac4
Date: Tue, 6 Aug 2002 13:58:11 -0700 [thread overview]
Message-ID: <p05111a05b975e7fd2d9f@[10.128.7.49]> (raw)
In-Reply-To: <1028671263.18130.194.camel@irongate.swansea.linux.org.uk>
At 11:01 PM +0100 8/6/02, Alan Cox wrote:
>On Tue, 2002-08-06 at 19:55, Samuel Flory wrote:
>> It appears that the OSB4 ide controller isn't working on ac4. I have
>> a Tyan 2515, and 2518 which hang when dma is enabled.
>
>DMA enabled by you or by the driver. Right now the driver isnt supposed
>to be enabling DMA on OSB4
FWIW, we're building systems with OSB4s, and can consistently
generate the advertised IDE corruption if we enable Ultra DMA (this
is with RH 2.4.9-31, which has an extra OSB4 warning message; the
message correlates with on-disk corruption).
After suffering with PIO for a month or three, we did fairly
extensive testing with multiword DMA (non-Ultra), and are feeling
confident enough about it to leave it turned on.
--
/Jonathan Lundell.
next prev parent reply other threads:[~2002-08-06 21:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-06 18:55 Samuel Flory
2002-08-06 22:01 ` Alan Cox
2002-08-06 20:58 ` Jonathan Lundell [this message]
2002-08-06 22:37 ` Alan Cox
2002-08-06 22:39 ` Samuel Flory
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