From mboxrd@z Thu Jan 1 00:00:00 1970 From: Borislav Petkov Subject: Re: http://bugzilla.kernel.org/show_bug.cgi?id=11742 Date: Sat, 25 Oct 2008 20:43:17 +0200 Message-ID: <20081025184317.GA3962@gollum.tnic> References: <20081020112039W.fujita.tomonori@lab.ntt.co.jp> <200810222215.02762.bzolnier@gmail.com> <20081024065043.GA4762@gollum.tnic> <200810251458.46140.bzolnier@gmail.com> <49032230.3080603@ru.mvista.com> <20081025174710.GA32108@gollum.tnic> <4903638F.4060309@ru.mvista.com> Reply-To: petkovbb@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from fk-out-0910.google.com ([209.85.128.189]:6104 "EHLO fk-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751513AbYJYSnX (ORCPT ); Sat, 25 Oct 2008 14:43:23 -0400 Received: by fk-out-0910.google.com with SMTP id 18so1243808fkq.5 for ; Sat, 25 Oct 2008 11:43:21 -0700 (PDT) Content-Disposition: inline In-Reply-To: <4903638F.4060309@ru.mvista.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Sergei Shtylyov Cc: Bartlomiej Zolnierkiewicz , FUJITA Tomonori , valerio.p@libero.it, linux-ide@vger.kernel.org On Sat, Oct 25, 2008 at 10:21:03PM +0400, Sergei Shtylyov wrote: > Hello. > > Borislav Petkov wrote: > >>>> For 'addr' we may try to use 4 bytes instead of the current 32 ones but lets >>>> fix the regression first. >>>> >>> Alas, TX4939 requeires 8-byte DMA address (and byte count) >>> alignment. Another semi-compatible SFF-8038 implementation... >>> >> >> ... which calls for a field in the capabilities and mechanical status page >> saying something like: hello, I'm a xy device and I can do z bytes dma >> alignment, otherwise I get cranky and don't work anymore :) >> > > I didn't get it -- TX4939 is IDE host controller and I can't imagine > how an ATAPI device could care about the buffer address alignment on the > host side... Sorry about that - I was talking only about the ATAPI device. Totally unrelated, my bad. -- Regards/Gruss, Boris.