From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [patch 3/3] ata: SWNCQ should be enabled by default Date: Sat, 05 Apr 2008 09:00:06 +0900 Message-ID: <47F6C106.2080202@gmail.com> References: <200803282133.m2SLXlWk011463@imap1.linux-foundation.org> <47EE465E.80401@gmail.com> <47EE88C9.3020805@dunaweb.hu> <47EEDACA.4060400@gmail.com> <15F501D1A78BD343BE8F4D8DB854566B1BFE2AF1@hkemmail01.nvidia.com> <47F069D7.3010702@gmail.com> <47F1A888.3020706@shaw.ca> <47F1AADC.1080104@shaw.ca> <15F501D1A78BD343BE8F4D8DB854566B1BFE2AF4@hkemmail01.nvidia.com> <47F5E271.10903@garzik.org> <47F63C77.9010202@shaw.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from wr-out-0506.google.com ([64.233.184.233]:59683 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751405AbYDEAAO (ORCPT ); Fri, 4 Apr 2008 20:00:14 -0400 Received: by wr-out-0506.google.com with SMTP id c48so285837wra.1 for ; Fri, 04 Apr 2008 17:00:12 -0700 (PDT) In-Reply-To: <47F63C77.9010202@shaw.ca> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: Jeff Garzik , Kuan Luo , Zoltan Boszormenyi , akpm@linux-foundation.org, linux-ide@vger.kernel.org, Peer Chen , Allen Martin Robert Hancock wrote: > Jeff Garzik wrote: >> Kuan Luo wrote: >>> Robert wrote: >>>> -Hotplug/hot-unplug fails to work properly, hotplug interrupts not >>>> raised (seemingly only on certain boards/configurations as I can't >>>> duplicate this problem). >>>> http://bugzilla.kernel.org/show_bug.cgi?id=8421 >>>> >>> I occasionly encountered this problem in one port under certain system, >>> but didn't see this issue under other systems in the same mainboard. >>> After adding the operation of manually clearing the added/removed >>> interrupt bit in NV_INT_STATUS_CK804 register in nv_adma_interrupt >>> function, i saw some improvement. The key problem is that no one who >>> knows this controller comes to help >>> to solve these issue. >>> Given this disadvantage, i think disabling it maybe is a good choice. >>> I don't know whether we need to continue to provide patch for adma after >>> disabling adma function. >> >> Is there any hope of getting permission for me to (a) give the NV ADMA >> documentation to Robert, or (b) posting the ADMA PDF on >> http://gkernel.sourceforge.net/specs/ ? >> >> I strongly encourage vendors -- especially with chips at or past >> end-of-life -- to help customers and developers by permitting posting >> at http://gkernel.sourceforge.net/specs/ >> >> Thanks, >> >> Jeff > > I would second that call. It's been suggested that 3rd party IP was what > inhibited this, I don't know if that is the case or not. But it would be > a very nice gesture if NVIDIA would do what it takes to make this possible. /me thirds. -- tejun