From owner-svn-src-all@FreeBSD.ORG Thu Aug 30 19:46:38 2012 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 DD1DB106566B; Thu, 30 Aug 2012 19:46:38 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id AEA3A8FC08; Thu, 30 Aug 2012 19:46:38 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q7UJkcb4002367; Thu, 30 Aug 2012 19:46:38 GMT (envelope-from jhb@svn.freebsd.org) Received: (from jhb@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id q7UJkchv002365; Thu, 30 Aug 2012 19:46:38 GMT (envelope-from jhb@svn.freebsd.org) Message-Id: <201208301946.q7UJkchv002365@svn.freebsd.org> From: John Baldwin Date: Thu, 30 Aug 2012 19:46:38 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r239917 - stable/9/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: Thu, 30 Aug 2012 19:46:39 -0000 Author: jhb Date: Thu Aug 30 19:46:38 2012 New Revision: 239917 URL: http://svn.freebsd.org/changeset/base/239917 Log: MFC 239103: Explicitly enable busmastering on PCI-PCI bridges. Transactions initiated on the secondary side of a bridge will not be propagated to the primary bus unless this is enabled. Busmastering is not enabled by default (we have relied on firmware to set this bit to date). The OS needs to set it for any bridges not configured by system firmware. Modified: stable/9/sys/dev/pci/pci_pci.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/amd64/include/xen/ (props changed) stable/9/sys/boot/ (props changed) stable/9/sys/boot/i386/efi/ (props changed) stable/9/sys/boot/ia64/efi/ (props changed) stable/9/sys/boot/ia64/ski/ (props changed) stable/9/sys/boot/powerpc/boot1.chrp/ (props changed) stable/9/sys/boot/powerpc/ofw/ (props changed) stable/9/sys/cddl/contrib/opensolaris/ (props changed) stable/9/sys/conf/ (props changed) stable/9/sys/contrib/dev/acpica/ (props changed) stable/9/sys/contrib/octeon-sdk/ (props changed) stable/9/sys/contrib/pf/ (props changed) stable/9/sys/contrib/x86emu/ (props changed) stable/9/sys/dev/ (props changed) stable/9/sys/dev/e1000/ (props changed) stable/9/sys/dev/isp/ (props changed) stable/9/sys/dev/ixgbe/ (props changed) stable/9/sys/fs/ (props changed) stable/9/sys/fs/ntfs/ (props changed) stable/9/sys/modules/ (props changed) Modified: stable/9/sys/dev/pci/pci_pci.c ============================================================================== --- stable/9/sys/dev/pci/pci_pci.c Thu Aug 30 18:30:08 2012 (r239916) +++ stable/9/sys/dev/pci/pci_pci.c Thu Aug 30 19:46:38 2012 (r239917) @@ -683,6 +683,13 @@ pcib_attach_common(device_t dev) * would be more widely routed than absolutely necessary. We could * then do a walk of the tree later and fix it. */ + + /* + * Always enable busmastering on bridges so that transactions + * initiated on the secondary bus are passed through to the + * primary bus. + */ + pci_enable_busmaster(dev); } int