From: Tejun Heo <tj@kernel.org>
To: Mark Miesfeld <miesfeld@gmail.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: Adding port multiplier support to a LLDD
Date: Mon, 23 Jun 2008 09:22:24 +0900 [thread overview]
Message-ID: <485EECC0.40902@kernel.org> (raw)
In-Reply-To: <5d74c5720806211335i12cd4764j2109703ab224b1cb@mail.gmail.com>
Mark Miesfeld wrote:
> Hi,
>
> I wonder if someone could give me a broad outline of what is needed to
> add port multiplier support to a low-level SATA device driver through
> libata in a 2.6.26 kernel.
>
> I'm working on a driver for a new SOC (460EX) that AMCC has. The chip
> has support for SATA and support for port multipliers through
> command-based switching.
>
> For our in-house validation boards I have the driver working on a
> 2.6.19 kernel and implemented the port multiplier support within the
> driver itself since libata didn't yet have port multiplier support.
>
> Our customer evaluation boards (Canyonlands) are using a 2.6.26
> kernel. Stefan Roese at DENX has ported the 2.6.19 driver to 2.6.26
> but without port multiplier support. In 2.6.26 the libata port
> multiplier support looks pretty good, I was hoping I can add the
> support to the 2.6.26 driver fairly easily by going through libata.
>
> What basic steps should I take?
The following thread should help.
http://thread.gmane.org/gmane.linux.ide/24799
--
tejun
prev parent reply other threads:[~2008-06-23 0:22 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-21 20:35 Adding port multiplier support to a LLDD Mark Miesfeld
2008-06-23 0:22 ` Tejun Heo [this message]
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