From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: ata_std_qc_defer not good enough for FIS-based switching ? Date: Thu, 15 May 2008 16:12:13 +0900 Message-ID: <482BE24D.8020900@gmail.com> References: <48163C5D.9050605@rtr.ca> <48164AE8.4070106@rtr.ca> <481659B5.7090703@gmail.com> <481660DD.80103@rtr.ca> <48167755.3000208@gmail.com> <4816873C.7090302@rtr.ca> <482AF322.2090605@gmail.com> <482AFB12.3040005@rtr.ca> <482AFCFA.40708@rtr.ca> <482B0A41.5030409@rtr.ca> <482B0C5D.5080207@rtr.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from wf-out-1314.google.com ([209.85.200.168]:64998 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752765AbYEOHMk (ORCPT ); Thu, 15 May 2008 03:12:40 -0400 Received: by wf-out-1314.google.com with SMTP id 27so267851wfd.4 for ; Thu, 15 May 2008 00:12:21 -0700 (PDT) In-Reply-To: <482B0C5D.5080207@rtr.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Jeff Garzik , IDE/ATA development list , Alan Cox Mark Lord wrote: > Mark Lord wrote: >> Mark Lord wrote: >>> Mark Lord wrote: >>>> .. >>>> At the moment, I have the Sil PM plugged in, and it all behaves nicely. >>>> The previous failure was with the Marvell PM, so I'll hook that up next >>>> and retest with it. >>> .. >>> >>> It went bonkers again. This is with 2.6.25. >>> I'll build 2.6.26-git and try again with that shortly. >> .. >> >> Okay, I have today's 2.6.26-rc2-git installed now. >> My PCIe notebook has an ExpressCard with this on it: >> >> 0d:00.0 Mass storage controller: Silicon Image, Inc. SiI 3132 Serial >> ATA Raid II Controller (rev 01) >> >> That's the controller I use with sata_sil24 here. >> >> I have a Marvell 4140 port-multiplier (standalone card), >> and have a Seagate 750GB drive (pmp=0) and a Hitachi 500GB drive (pmp=2). >> >> When I simply do "hdparm -t" simultaneously on both drives, >> something gets very confused somewhere. Neither drive has any media >> errors, >> and this exact same test works fine with sata_mv in my other system. >> The same test also works fine with both controllers >> when using a Silicon Image PM instead of the Marvell. >> >> When I move the second drive to pmp=1 (instead of pmp=2), >> then sata_sil24 no longer has problems. Very peculiar. >> >> Here's the log from sata_sil24, ports 0,2, as it fails: > .. > > And here is the log from sata_sil24, ports 0,1, as it works: Heh.. detection doesn't work too well either. I have to tell you mv 4140 is my favorite pmp. It just behaved right. Ironically, all later works were focused on simg 3726/4726's because they didn't behave. I'll give well-deserved love to my 4140 and get back to you soon. Thanks. -- tejun