linux-ide.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Alan <alan@lxorguk.ukuu.org.uk>
To: Allen Martin <AMartin@nvidia.com>
Cc: 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: Mon, 5 Feb 2007 18:12:24 +0000	[thread overview]
Message-ID: <20070205181224.3319d6c3@localhost.localdomain> (raw)
In-Reply-To: <DBFABB80F7FD3143A911F9E6CFD477B01EC0DD7D@hqemmail02.nvidia.com>

> 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)

Alan

  reply	other threads:[~2007-02-05 17:59 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 [this message]
2007-02-05 18:36                   ` Tejun Heo
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20070205181224.3319d6c3@localhost.localdomain \
    --to=alan@lxorguk.ukuu.org.uk \
    --cc=AMartin@nvidia.com \
    --cc=bzolnier@gmail.com \
    --cc=linux-ide@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).