From: Douglas Gilbert <dougg@torque.net>
To: linux-kernel@vger.kernel.org
Cc: Jason Howard <""lists\"\"@spectsoft.com>
Subject: Re: DMA from SCSI controller to PCI frame buffer memory.
Date: Sun, 15 Dec 2002 13:06:54 +1100 [thread overview]
Message-ID: <3DFBE3BE.5030209@torque.net> (raw)
Jason wrote:
> Any recommendations on where to start hacking? Would
> it be a good idea to add O_DIRECT to a mmaped PCI space?
> The kernel should not be doing any buffering whatsoever,
> as we will be coming close to filling the pci bus up
> with transfers from direct disk->fb already. (We are
> already doing buffering on the FB card as well)
Jason,
Here is a less general solution that I worked on some
time ago involving the scsi generic driver.
http://www.torque.net/sg/mem2disk.html
It worked ok for one application in the early 2.4 series.
Doug Gilbert
next reply other threads:[~2002-12-15 1:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-15 2:06 Douglas Gilbert [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-12-13 19:15 DMA from SCSI controller to PCI frame buffer memory Jason Howard
2002-12-14 3:41 ` Alan Cox
2002-12-14 5:24 ` Andrew Morton
2002-12-14 20:29 ` Jason Howard
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