From: Tejun Heo <tj@kernel.org>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Shaohua Li <shaohua.li@intel.com>, linux-ide <linux-ide@vger.kernel.org>
Subject: Re: [RFC] add DMA setup FIS auto-activate feature
Date: Thu, 23 Jul 2009 15:12:38 +0900 [thread overview]
Message-ID: <4A67FF56.5040708@kernel.org> (raw)
In-Reply-To: <4A67FE1A.1050408@pobox.com>
Jeff Garzik wrote:
> Tejun Heo wrote:
>> IIRC, AA is in the ahci spec from rev 1.0, so if controllers implement
>
> AHCI? Perhaps. But AA is not in the _Serial ATA_ 1.0 spec...
>
> It was added in SATA II, and the SATA II specs specifically mention that
> AA was not present in SATA 1.0.
Yeap, it wasn't in SATA 1.0 but it was in ahci 1.0 so _theoretically_
all ahcis should be fine with it. We can introduce ATA_FLAG_FPDMA_AA
and let the drivers set it. It would probably be better to set it
during -rc's and then disable it for release for a few devel cycles.
Thanks.
--
tejun
next prev parent reply other threads:[~2009-07-23 6:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-23 3:45 [RFC] add DMA setup FIS auto-activate feature Shaohua Li
2009-07-23 3:50 ` Tejun Heo
2009-07-23 3:59 ` Jeff Garzik
2009-07-23 5:40 ` Shaohua Li
2009-07-23 5:45 ` Tejun Heo
2009-07-23 6:07 ` Jeff Garzik
2009-07-23 6:12 ` Tejun Heo [this message]
2009-07-23 6:48 ` Jeff Garzik
2009-07-23 7:25 ` Shaohua Li
2009-07-23 18:07 ` Robert Hancock
2009-07-23 18:11 ` Jeff Garzik
2009-07-23 20:52 ` Tejun Heo
2009-07-24 9:12 ` Shaohua Li
2009-07-25 0:47 ` Tejun Heo
2009-07-27 1:24 ` Shaohua Li
2009-07-27 1:31 ` Tejun Heo
2009-07-29 1:20 ` Jeff Garzik
2009-07-23 6:18 ` Robert Hancock
2009-07-23 9:55 ` 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=4A67FF56.5040708@kernel.org \
--to=tj@kernel.org \
--cc=jgarzik@pobox.com \
--cc=linux-ide@vger.kernel.org \
--cc=shaohua.li@intel.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.