From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jaco van der Schyff <jvds@netgroup.co.za>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: DMA problems with 3+ Promise IDE controllers
Date: Thu, 23 Dec 2004 23:39:24 +0000 [thread overview]
Message-ID: <1103845162.15233.9.camel@localhost.localdomain> (raw)
In-Reply-To: <41CB1BE3.465BD490@netgroup.co.za>
On Iau, 2004-12-23 at 19:26, Jaco van der Schyff wrote:
> Any idea how I could get all three cards to work in UDMA100 mode?
You either need multiple independant PCI busses or to write an
arbitrator for the IDE DMA layer to ensure that no more than two of the
three are doing DMA transfers at a time and the other waits.
Alan
next prev parent reply other threads:[~2004-12-24 0:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-23 19:26 DMA problems with 3+ Promise IDE controllers Jaco van der Schyff
2004-12-23 23:39 ` Alan Cox [this message]
2004-12-24 4:42 ` Ross Biro
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