From: Tejun Heo <htejun@gmail.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: Allen Martin <AMartin@nvidia.com>,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-ide@vger.kernel.org,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Nvidia cable detection problems (was [PATCH] amd74xx: don't configure udma mode higher than BIOS did)
Date: Tue, 06 Feb 2007 03:36:17 +0900 [thread overview]
Message-ID: <45C77921.4020808@gmail.com> (raw)
In-Reply-To: <20070205181224.3319d6c3@localhost.localdomain>
Alan wrote:
>> The *real* solution is to use the BIOS ACPI _GTM _STM methods for this.
>> Then you can remove all chipset specific knowledge from the IDE driver.
>> This is what the MS driver does on Windows, so you know it's received a
>> lot of testing from NVIDIA and board vendors.
>
> Well we can certainly do some of that if ACPI is present and active. In
> particular since _GTM will give us current modes allowing for hotplug and
> post BIOS boot kexec etc it ought to be safe to do Tejun's hack that way.
> We could even probe UDMA3+ capable devices by doing _STM to a high mode
> and _GTM to determine the cable type 8)
Glad to see the problem getting solved. Now that we know the solution,
any volunteers? :-)
--
tejun
next prev parent reply other threads:[~2007-02-05 18:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-05 7:58 [PATCH] amd74xx: don't configure udma mode higher than BIOS did Tejun Heo
2007-02-05 11:24 ` Alan
2007-02-05 12:16 ` Tejun Heo
2007-02-05 12:33 ` Tejun Heo
2007-02-05 13:24 ` Alan
2007-02-05 14:17 ` Tejun Heo
2007-02-05 13:22 ` Alan
2007-02-05 14:07 ` Tejun Heo
2007-02-05 14:34 ` Nvidia cable detection problems (was [PATCH] amd74xx: don't configure udma mode higher than BIOS did) Alan
2007-02-05 14:50 ` Tejun Heo
2007-02-05 15:49 ` Alan
[not found] ` <58cb370e0702050709w1b7682dr5dff9e7ce69465a@mail.gmail.com>
2007-02-05 17:08 ` Allen Martin
2007-02-05 18:12 ` Alan
2007-02-05 18:36 ` Tejun Heo [this message]
2007-02-05 18:55 ` Bartlomiej Zolnierkiewicz
2007-02-05 19:15 ` Tejun Heo
2007-02-05 21:27 ` Bartlomiej Zolnierkiewicz
2007-02-05 22:02 ` Alan
2007-02-05 22:00 ` Bartlomiej Zolnierkiewicz
2007-02-05 19:13 ` Alan
2007-02-05 21:43 ` Jeff Garzik
2007-02-05 15:32 ` [PATCH] amd74xx: don't configure udma mode higher than BIOS did Sergei Shtylyov
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