From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: Fwd: CMD 64x regression from 2.6.21 to 2.6.22 and 2.6.23? Date: Sat, 20 Oct 2007 21:11:56 +0400 Message-ID: <471A36DC.4040509@ru.mvista.com> References: <200710142211.03382.marogge@onlinehome.de> <200710192158.03836.marogge@onlinehome.de> <471912EF.4020208@ru.mvista.com> <200710200109.58872.marogge@onlinehome.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from homer.mvista.com ([63.81.120.155]:61394 "EHLO imap.sh.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1756554AbXJTRLq (ORCPT ); Sat, 20 Oct 2007 13:11:46 -0400 In-Reply-To: <200710200109.58872.marogge@onlinehome.de> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Martin Rogge Cc: Bartlomiej Zolnierkiewicz , Mark Lord , linux-ide@vger.kernel.org Martin Rogge wrote: > 00:04.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) > (prog-if 80 [Master]) > Flags: medium devsel > [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] > [size=8] > [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] > [size=1] > [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] > [size=8] > [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] > [size=1] > I/O ports at d800 [disabled] [size=16] [...] > 00:07.0 IDE interface: Silicon Image, Inc. PCI0648 (rev 01) (prog-if 8f > [Master SecP SecO PriP PriO]) > Subsystem: ASUSTeK Computer Inc. CUBX motherboard > Flags: bus master, medium devsel, latency 64, IRQ 15 > I/O ports at d000 [size=8] > I/O ports at b800 [size=4] > I/O ports at b400 [size=8] > I/O ports at b000 [size=4] > I/O ports at a800 [size=16] > Capabilities: [60] Power Management version 1 What I don't like is that both PIIX4 and PCI-648 are sharing IRQ15 (PIIX4 is in legacy mode, so it uses edge-triggered IRQ15 which is not shareable). You don't have drives connected to PIIX4, do you? However, it doesn't look like a glitch on IRQ15, it looks like MRDMODE reg. doesn't work as documented... > cu Martin MBR, Sergei