From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: B.Zolnierkiewicz@elka.pw.edu.pl, linux-ide@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: RFC: Compact Flash True IDE Mode Driver
Date: Mon, 06 Feb 2006 15:13:27 +1100 [thread overview]
Message-ID: <1139199208.4994.2.camel@localhost.localdomain> (raw)
In-Reply-To: <Pine.LNX.4.44.0602010113210.5670-100000@gate.crashing.org>
On Wed, 2006-02-01 at 01:19 -0600, Kumar Gala wrote:
> I was hoping to get some comments on this work in progress driver for
> using a compact flash device running in True IDE Mode connect via a MMIO
> interface. The driver is working, however the embedded system I'm running
> on need some HW fixes to address the fact that the byte lanes for the data
> are swapped. I figured now was a good time to incorporate any changes
> while I wait for the HW fixes (which will allow me to remove the
> cfide_outsw & cfide_insw).
Your driver basically boils down to a simple IDE host driver configured
by platform functions. I suggest you remove "compact flash" here and
have the platform resource optinally be either PIO or MMIO and you
magically get a "generic" IDE driver useable by a lot of simple embedded
machines (it assumes all timing related things have been handled by the
firmware). Want to be sneakier ? Add a timing setup callback to the
platform data you pass to it and you get one that can even do PIO
modes :)
Ben.
next prev parent reply other threads:[~2006-02-06 4:12 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-01 7:19 RFC: Compact Flash True IDE Mode Driver Kumar Gala
2006-02-06 4:13 ` Benjamin Herrenschmidt [this message]
2006-02-13 10:35 ` Bartlomiej Zolnierkiewicz
2006-02-13 16:30 ` Kumar Gala
2006-02-13 16:53 ` Bartlomiej Zolnierkiewicz
2006-02-13 19:45 ` Kumar Gala
2006-02-13 20:21 ` Bartlomiej Zolnierkiewicz
2006-02-13 22:13 ` Kumar Gala
2006-02-13 22:35 ` Bartlomiej Zolnierkiewicz
2006-02-14 14:57 ` Kumar Gala
2006-02-14 15:57 ` Bartlomiej Zolnierkiewicz
2006-02-14 16:07 ` Kumar Gala
2006-02-14 16:24 ` Bartlomiej Zolnierkiewicz
2006-02-14 16:58 ` Alan Cox
2006-02-14 16:48 ` Kumar Gala
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