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From: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
To: Kiko Piris <kernel@pirispons.net>
Subject: Re: [2.6.8-rc1] lost DMA on my Intel 82801EB (ICH5) Serial ATA 150 Storage Controller
Date: Tue, 14 Sep 2004 14:12:35 +0200
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always cc: linux-ide@vger.kernel.org on ATA stuff

you need CONFIG_BLK_DEV_IDE_SATA

ping Jeff Garzik to make it more verbose
(ie. add runtime warning)

On Tuesday 14 September 2004 08:35, Kiko Piris wrote:
> Hi,
> 
> Since 2.6.8-rc1, DMA does not work for me. I've tried (almost) all
> kernels since that one: 2.6.8-rc[1234], 2.6.8.1 and 2.6.9-rc2.
> 
> With all of them I get the same result:
> 
> A hdparm -d tells me that DMA is off (and in fact, it is off as I can
> see from the numbers of a hdparm -t).
> 
> And if I try to activate it with hdparm -d1, it gives me a "operation
> not supported" error.
> 
> The last one that I've ben able to make DMA work is 2.6.7.
> 
> Attached is the output of:
> 
> * lspci -v
> * hdparm -I /dev/hda
> * /proc/cpuinfo
> * cat /boot/config-2.6.9-rc2 | grep -i ^config
> * dmesg (right after booting both 2.6.7 and 2.6.9-rc2)
> 
> Am I doing something wrong? Do I need to provide more information?
> 
> Many thanks in advance.
>