Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761007AbYF2OXV (ORCPT ); Sun, 29 Jun 2008 10:23:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759708AbYF2OXF (ORCPT ); Sun, 29 Jun 2008 10:23:05 -0400 Received: from rtsoft3.corbina.net ([85.21.88.6]:12125 "EHLO buildserver.ru.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1758308AbYF2OXE (ORCPT ); Sun, 29 Jun 2008 10:23:04 -0400 Date: Sun, 29 Jun 2008 18:23:00 +0400 From: Anton Vorontsov To: Sergei Shtylyov Cc: Alan Cox , Ingo Molnar , linux-ide@vger.kernel.org, Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org, Thomas Gleixner , Steven Rostedt , Daniel Walker Subject: Re: [PATCH v2 -rt] ide: workaround buggy hardware issues with preemptable hardirqs Message-ID: <20080629142300.GA4599@polina.dev.rtsoft.ru> Reply-To: avorontsov@ru.mvista.com References: <20080623234037.GA6793@polina.dev.rtsoft.ru> <20080623235141.GB17297@elte.hu> <20080624000016.GA12547@polina.dev.rtsoft.ru> <20080625123431.GA25452@polina.dev.rtsoft.ru> <20080628005436.GA1956@polina.dev.rtsoft.ru> <20080628101431.0b64d6c2@lxorguk.ukuu.org.uk> <486615E2.3080802@ru.mvista.com> <20080629134943.19b94bd2@lxorguk.ukuu.org.uk> <48678B72.4000706@ru.mvista.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Disposition: inline In-Reply-To: <48678B72.4000706@ru.mvista.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1104 Lines: 34 On Sun, Jun 29, 2008 at 05:17:38PM +0400, Sergei Shtylyov wrote: > Alan Cox wrote: > >>> His boot log shows the native mode. > >> Then the bridge is misprogrammed > >>> What's IDEIRT, some ISA bridge register? And why should one set >>> [A]PIC to level mode for legacy mode IDE? :-O > >> You need an NDA and then they'll send you the data sheet for the bridges >> and other logic. It's all programmable. > > That could be a very long story... :-| > >> "He has an OpenPIC, it's PowerPC SoC, so no ELCR either" > >> Really - he's using a designed for PC ISA bridge etc.. he might have all >> sorts of stuff on it. > > Ah, indeed. I meant to say that 8259 and ELCR are bypassed for PCI IRQs > (or at least Anton says so :-). Yes, we don't use 8259 for the IDE interrupt. -- Anton Vorontsov email: cbouatmailru@gmail.com irc://irc.freenode.net/bd2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/