From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: regression: ide-floppy doesn't work with IOMEGA IDE ZIP drive Date: Tue, 13 Mar 2007 23:24:47 +0900 Message-ID: <45F6B42F.80004@gmail.com> References: <45F6964D0200002D000156EC@emea5-mh.id5.novell.com> <45F695B8.5030006@gmail.com> <20070313134231.3d1a0263@lxorguk.ukuu.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wr-out-0506.google.com ([64.233.184.237]:20955 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030376AbXCMOYz (ORCPT ); Tue, 13 Mar 2007 10:24:55 -0400 Received: by wr-out-0506.google.com with SMTP id i28so1352477wra for ; Tue, 13 Mar 2007 07:24:54 -0700 (PDT) In-Reply-To: <20070313134231.3d1a0263@lxorguk.ukuu.org.uk> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cox Cc: Stanislav Brabec , jeff@garzik.org, bzolnier@gmail.com, paul@paulbristow.net, linux-ide@vger.kernel.org Alan Cox wrote: >> It seems ide-floppy needs some special handlings in interrupt handling >> too like delaying data transfer by several ticks after device indicates >> readiness. Apart from separate high level driver, we might have to >> modify libata HSM implementation if we're gonna support these devices. > > The data transfer delay may well be down to the DMA bug I see. >> Can someone more knowledgeable explain what needs to be done differently >> from standard ATAPI for these devices? > > In theory not a lot if anything. I don't have a ZIP drive but have got an > old Iomega Clik! PCMCIA drive somewhere if you need an ide-floppy device > Tejun. If you've got a spare one, that would be great but otherwise I think you're much better qualified for libata ide-floppy support. :-) Thanks. -- tejun