From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: http://bugzilla.kernel.org/show_bug.cgi?id=11742 Date: Sat, 25 Oct 2008 22:21:03 +0400 Message-ID: <4903638F.4060309@ru.mvista.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from h155.mvista.com ([63.81.120.155]:6374 "EHLO imap.sh.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750960AbYJYSVM (ORCPT ); Sat, 25 Oct 2008 14:21:12 -0400 In-Reply-To: <20081025174710.GA32108@gollum.tnic> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: petkovbb@gmail.com Cc: Bartlomiej Zolnierkiewicz , FUJITA Tomonori , valerio.p@libero.it, linux-ide@vger.kernel.org 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... MBR. Sergei