linux-kernel - Re: port multiplier problem

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Message-ID: <da824cf31002021104v72efcd05ne639091042d5999d@mail.gmail.com>
Date:	Tue, 2 Feb 2010 11:04:38 -0800
From:	Grant Grundler <grundler@...gle.com>
To:	Chandra Shekhar Sah <edu4madh@...il.com>
Cc:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: port multiplier problem

On Tue, Feb 2, 2010 at 10:12 AM, Chandra Shekhar Sah <edu4madh@...il.com> wrote:
> Hi Grant,
>
> There are 6 Seagate Barracuda and 6 Hitachi DeskStar.

I thought 0x1095/0x3726 was a Silicon Image part. Can you confirm this?

If it is, this sounds like a broken implementation to me. Here is what
the Silicon Image 3726 Data Sheet says in the introduction:
    Silicon Image’s SiI3726 is 1-to-5 SATA Port Multiplier designed to
provide a high performance link between a single SATA host port and 5
SATA device ports.

So I don't know where the 6th device is getting connected. Some
explanation/data sheet from the HW vendor would be helpful at this
point.

> Seagate Model: ST3750640AS
> Firmware: 3.AAK
>
> Hitachi Model:HDS721075KLA330
> Firmware: Not sure

Both of these drives work behind Sil3726. (First hand experience).

>
> I have attached pictures of both labels, in case.

Perfect - thanks for posting those.

thanks,
grant
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