linux-kernel - Re: Do ICH10+AHCI-driver support port-multiplying on a eSATA port?

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Message-ID: <20090110000106.GD32364@curie-int.orbis-terrarum.net>
Date:	Fri, 9 Jan 2009 16:01:06 -0800
From:	"Robin H. Johnson" <robbat2@...too.org>
To:	linux-ide@...r.kernel.org
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: Do ICH10+AHCI-driver support port-multiplying on a eSATA port?

On Fri, Jan 09, 2009 at 04:01:27PM +0100, Soeren Sonnenburg wrote:
> I am trying to connect an external 2-disk case (eCube II  see
> http://www.one-tech.com/EN/htm_ecube.htm) to an ICH10 skyburg dp45sg
> board via eSATA. As the case requires a port-multiplying sata card, I am
> wondering if ich10+ahci support it?
Look at the portion of your dmesg where AHCI is loaded:
You'll see some lines like this:

[3675853.416077] ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo pmp pio slum part ems 
[3675855.666834] ahci 0000:04:00.0: flags: 64bit stag led slum part 
Relevant lspci bits:
00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller
04:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6121 SATA II Controller (rev b1)

Notice the 'pmp' flag on the first one. From what I understand, the AHCI
BIOS portions can choose to enable or disable things like PMP support,
and that's why it's reflected in the inquiry data.

Another box:
[    4.396835] ahci 0000:00:1f.2: flags: 64bit ncq pm led clo pio slum part 

And the lspci:
00:1f.2 SATA controller: Intel Corporation 82801GR/GH (ICH7 Family) SATA AHCI Controller (rev 01)

-- 
Robin Hugh Johnson
Gentoo Linux Developer & Infra Guy
E-Mail     : robbat2@...too.org
GnuPG FP   : 11AC BA4F 4778 E3F6 E4ED  F38E B27B 944E 3488 4E85

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