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From: Jeff Garzik <jgarzik@pobox.com>
To: Doug Maxey <dwm@maxeymade.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Albert Lee <albertcc@tw.ibm.com>,
	"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
	Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>,
	Tejun Heo <htejun@gmail.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: Organized summary of the pacthes
Date: Sat, 9 Jul 2005 23:44:44 -0400	[thread overview]
Message-ID: <20050710034444.GD13883@havoc.gtf.org> (raw)
In-Reply-To: <200507100054.j6A0s6Ct025796@falcon30.maxeymade.com>

On Sat, Jul 09, 2005 at 07:54:06PM -0500, Doug Maxey wrote:
> >> However, I am pondering scrapping all the polling code, since on SATA,
> >> interrupt-driven mode is much more desirable.
> >
> >You need both interrupt and polled command issue. ACPI needs to be able
> >to issue taskfiles to the IDE drive fairly early during resume. Right
> >now this isn't done at all. If polled is there it might also prove a
> >useful way to reissue a command when you think the IRQ routing is hosed
> >8)
> 
> This would be an enhancement, rather than something required currently,
> correct?

Switching over to interrupt-driven for SATA is basically a requirement.

Since the polling code is what exists now, it MAY be easier to leave it
in, which puts "leave in polling code" in the enhancement category.

	Jeff




  reply	other threads:[~2005-07-10  3:44 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <42C12A10.8030308@tw.ibm.com>
2005-06-28 15:21 ` Organized summary of the pacthes Jeff Garzik
2005-06-28 18:00   ` Alan Cox
2005-07-10  0:54     ` Doug Maxey
2005-07-10  3:44       ` Jeff Garzik [this message]
2005-06-30  8:43   ` Albert Lee
2005-06-30 12:45     ` Al Boldi
2005-07-02  5:24     ` Tejun Heo
2005-06-30 17:10   ` Olaf Hering

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