From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932467Ab1CDSnc (ORCPT ); Fri, 4 Mar 2011 13:43:32 -0500 Received: from oproxy2-pub.bluehost.com ([67.222.39.60]:52638 "HELO oproxy2-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1759975Ab1CDSna (ORCPT ); Fri, 4 Mar 2011 13:43:30 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=r9NV2SYl41iWa4CZBM50K6V9P+CZI8oq7bsvQz2pqYYH/KqsXw4lsAgUpRNgV6BzS9OrgAjFr/hR8VfiqJCFEiBcbEv1WMy6zBHyWCa56LPZBTu4zPuFzT2pLHQds9D9; Date: Fri, 4 Mar 2011 10:43:25 -0800 From: Jesse Barnes To: Jiri Slaby Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, jirislaby@gmail.com, Bjorn Helgaas , "David S. Miller" , Thomas Renninger Subject: Re: [PATCH 2/2] PCI: do not create quirk I/O regions below PCIBIOS_MIN_IO for ICH Message-ID: <20110304104325.584ed94e@jbarnes-desktop> In-Reply-To: <1298886310-11381-2-git-send-email-jslaby@suse.cz> References: <1298886310-11381-1-git-send-email-jslaby@suse.cz> <1298886310-11381-2-git-send-email-jslaby@suse.cz> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.22.0; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 67.174.193.198 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 28 Feb 2011 10:45:10 +0100 Jiri Slaby wrote: > Some broken BIOSes on ICH4 chipset report an ACPI region which is in > conflict with legacy IDE ports when ACPI is disabled. Even though the > regions overlap, IDE ports are working correctly (we cannot find out > the decoding rules on chipsets). > > So the only problem is the reported region itself, if we don't reserve > the region in the quirk everything works as expected. > > This patch avoids reserving any quirk regions below PCIBIOS_MIN_IO > which is 0x1000. Some regions might be (and are by a fast google > query) below this border, but the only difference is that they won't > be reserved anymore. They should still work though the same as before. > > The conflicts look like (1f.0 is bridge, 1f.1 is IDE ctrl): > pci 0000:00:1f.1: address space collision: [io 0x0170-0x0177] conflicts with 0000:00:1f.0 [io 0x0100-0x017f] > > At 0x0100 a 128 bytes long ACPI region is reported in the quirk for > ICH4. ata_piix then fails to find disks because the IDE legacy ports > are zeroed: > ata_piix 0000:00:1f.1: device not available (can't reserve [io 0x0000-0x0007]) Applied both of these, thanks. -- Jesse Barnes, Intel Open Source Technology Center