From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Klotz Subject: Does ICH9M support eSATA Port Multiplier? Date: Thu, 29 Oct 2009 20:36:03 +0100 Message-ID: <4AE9EEA3.1040404@aon.at> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from nat-warsl417-02.aon.at ([195.3.96.120]:50837 "EHLO email.aon.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753159AbZJ2Tmm (ORCPT ); Thu, 29 Oct 2009 15:42:42 -0400 Received: from smarthub91.highway.telekom.at (HELO email.aon.at) ([172.18.5.238]) (envelope-sender ) by fallback43.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 29 Oct 2009 19:36:06 -0000 Received: from 91-115-38-32.adsl.highway.telekom.at (HELO [192.168.0.102]) ([91.115.38.32]) (envelope-sender ) by smarthub91.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 29 Oct 2009 19:36:03 -0000 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org I have the following setup: Notebook (Ubuntu 9.10, 2.6.31-14 amd64) with ICH9M controller in AHCI mode and an external storage box (Sil5744, 2 HDDs) connected via eSATA. The box supports JBOD and the manufacturer says that a Port Multiplier capable eSATA port is needed to see both HDDs. I see only one HDD. Here is part of the dmesg output from startup: [ 0.725096] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 4 ports 3 Gbps 0x23 impl SATA mode [ 0.725099] ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo pio slum part ems The pmp flag is not present but several sources claim that ICH9 supports Port Multiplier. Should Port Multiplier be available for ICH9M? Can I enable it somehow maybe by using a module option? Regards, Peter.