From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: PMPs Date: Thu, 02 Apr 2009 09:30:52 +0900 Message-ID: <49D4073C.4010101@kernel.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:35571 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759357AbZDBAbB (ORCPT ); Wed, 1 Apr 2009 20:31:01 -0400 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mikael Abrahamsson Cc: linux-ide@vger.kernel.org Hello, Mikael Abrahamsson wrote: > I have a SiL based PCI-E card and a PMP: > > 02:00.0 Mass storage controller: Silicon Image, Inc. SiI 3132 Serial ATA > Raid II Controller (rev 01) > > ata8.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 6 ports, feat 0x1/0x9 > > I'm using Ubuntu 8.10 kernel 2.6.27-11-generic #1 SMP Thu Jan 29 > 19:24:39 UTC 2009 i686 GNU/Linux > > I'm running into all kinds of weird behaviour, like only P1 (port 1 > out of 5) on the PMP working with single drive. Also, it seems to > differ whether I have a WD or Samsung drive, the WD drive works > alone in P1 and P2 of the PMP, with the Samsung drive only working > alone in P1. If I put the Samsung drive in P1 and put the WD drive > in P3, the P3 drive isn't recognised upon hotplug. If I unplug > Samsung P1 drive and re-insert it in the same P1 hotswat bay again, > drives in both P1 and P3 are recognised upon P1 spinning up and > being recognised. > > Is this a known problem? > > This is perfectly reproducible, I can provide logs if that would > help. I'm also willing to try 2.6.29.x if there has been work done > after 2.6.27. You need to keep the first port occupied for 3726/4726; otherwise, the fake config disk jumps around and it just goes belly up. Do you experience problems even with the first port occupied? Thanks. -- tejun