From owner-svn-src-all@FreeBSD.ORG Fri Mar 18 13:16:35 2011 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E863D106564A; Fri, 18 Mar 2011 13:16:35 +0000 (UTC) (envelope-from nwhitehorn@freebsd.org) Received: from mail.icecube.wisc.edu (trout.icecube.wisc.edu [128.104.255.119]) by mx1.freebsd.org (Postfix) with ESMTP id BEAD18FC14; Fri, 18 Mar 2011 13:16:35 +0000 (UTC) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.icecube.wisc.edu (Postfix) with ESMTP id E2B125811E; Fri, 18 Mar 2011 07:48:29 -0500 (CDT) X-Virus-Scanned: amavisd-new at icecube.wisc.edu Received: from mail.icecube.wisc.edu ([127.0.0.1]) by localhost (trout.icecube.wisc.edu [127.0.0.1]) (amavisd-new, port 10030) with ESMTP id EJ5h8dW04wow; Fri, 18 Mar 2011 07:48:29 -0500 (CDT) Received: from wanderer.tachypleus.net (unknown [76.210.65.155]) by mail.icecube.wisc.edu (Postfix) with ESMTP id 40AFE5811D; Fri, 18 Mar 2011 07:48:29 -0500 (CDT) Message-ID: <4D83549C.5010703@freebsd.org> Date: Fri, 18 Mar 2011 07:48:28 -0500 From: Nathan Whitehorn User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.9.2.15) Gecko/20110317 Thunderbird/3.1.9 MIME-Version: 1.0 To: John Baldwin References: <201103181213.p2ICD4Vr066256@svn.freebsd.org> In-Reply-To: <201103181213.p2ICD4Vr066256@svn.freebsd.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r219737 - head/sys/dev/pci X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Mar 2011 13:16:36 -0000 On 03/18/11 07:13, John Baldwin wrote: > Author: jhb > Date: Fri Mar 18 12:13:04 2011 > New Revision: 219737 > URL: http://svn.freebsd.org/changeset/base/219737 > > Log: > Fix a few issues with HyperTransport devices and MSI interrupts: > - Always enable the HyperTransport MSI mapping window for HyperTransport > to PCI bridges (these show up as HyperTransport slave devices). > The mapping windows in PCI-PCI bridges are enabled by existing code > in the PCI-PCI bridge driver as MSI requests propagate up the device > tree, but Host-PCI bridges don't really show up in that tree. > - If the PCI device at domain 0 bus 0 slot 0 function 0 is not a > HyperTransport device, then blacklist MSI on any other HT devices in > the system. Linux has a similar quirk. > I think this last change only works on x86 systems. My powerpc desktop has hypertransport and MSI, but PCI bus 0 (the PCI-E bus with the graphics card in it) is not connected over hypertransport and has nothing to do with it. Also, the root host->HT bridge doesn't show up in PCI space at all. -Nathan