From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [PATCH v2 -rt] ide: workaround buggy hardware issues with preemptable hardirqs Date: Sun, 29 Jun 2008 17:17:38 +0400 Message-ID: <48678B72.4000706@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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from h155.mvista.com ([63.81.120.155]:62544 "EHLO imap.sh.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754841AbYF2NRa (ORCPT ); Sun, 29 Jun 2008 09:17:30 -0400 In-Reply-To: <20080629134943.19b94bd2@lxorguk.ukuu.org.uk> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cox Cc: avorontsov@ru.mvista.com, Ingo Molnar , linux-ide@vger.kernel.org, Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org, Thomas Gleixner , Steven Rostedt , Daniel Walker 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 :-). > Alan MBR, Sergei