From patchwork Thu Nov 9 14:00:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Bryant G. Ly" X-Patchwork-Id: 10051005 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8AF39601EB for ; Thu, 9 Nov 2017 14:01:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7DB1B2AD5A for ; Thu, 9 Nov 2017 14:01:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 726F72AD5B; Thu, 9 Nov 2017 14:01:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1458A2AD5C for ; Thu, 9 Nov 2017 14:01:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754870AbdKIOBE (ORCPT ); Thu, 9 Nov 2017 09:01:04 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47376 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754858AbdKIOBD (ORCPT ); Thu, 9 Nov 2017 09:01:03 -0500 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vA9Dxia4142117 for ; Thu, 9 Nov 2017 09:01:03 -0500 Received: from e38.co.us.ibm.com (e38.co.us.ibm.com [32.97.110.159]) by mx0a-001b2d01.pphosted.com with ESMTP id 2e4qehbggr-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 09 Nov 2017 09:00:56 -0500 Received: from localhost by e38.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 9 Nov 2017 07:00:53 -0700 Received: from b03cxnp08026.gho.boulder.ibm.com (9.17.130.18) by e38.co.us.ibm.com (192.168.1.138) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 9 Nov 2017 07:00:50 -0700 Received: from b03ledav006.gho.boulder.ibm.com (b03ledav006.gho.boulder.ibm.com [9.17.130.237]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vA9E0nUB41287832; Thu, 9 Nov 2017 07:00:49 -0700 Received: from b03ledav006.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 888A9C6037; Thu, 9 Nov 2017 07:00:49 -0700 (MST) Received: from 50-201-95-250-static.hfc.comcastbusiness.net (unknown [9.85.168.198]) by b03ledav006.gho.boulder.ibm.com (Postfix) with ESMTP id E734DC6059; Thu, 9 Nov 2017 07:00:47 -0700 (MST) From: "Bryant G. Ly" To: helgaas@kernel.org, bhelgaas@google.com, benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: seroyer@linux.vnet.ibm.com, jjalvare@linux.vnet.ibm.com, alex.williamson@redhat.com, linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, bodong@mellanox.com, eli@mellanox.com, saeedm@mellanox.com, "Bryant G. Ly" Subject: [PATCH v5 3/3] PCI/IOV: Add pci_vf_drivers_autoprobe() interface Date: Thu, 9 Nov 2017 08:00:35 -0600 X-Mailer: git-send-email 2.13.6 (Apple Git-96) In-Reply-To: <20171109140035.64975-1-bryantly@linux.vnet.ibm.com> References: <20171109140035.64975-1-bryantly@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17110914-0028-0000-0000-0000089FD7D1 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008038; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000239; SDB=6.00943402; UDB=6.00475979; IPR=6.00723686; BA=6.00005681; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017934; XFM=3.00000015; UTC=2017-11-09 14:00:52 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17110914-0029-0000-0000-000038441FAA Message-Id: <20171109140035.64975-4-bryantly@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-11-09_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=3 malwarescore=0 lowpriorityscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1711090192 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a pci_vf_drivers_autoprobe() interface. Setting autoprobe to false on the PF prevents drivers from binding to VFs when they are enabled. Signed-off-by: Bryant G. Ly Signed-off-by: Juan J. Alvarez Acked-by: Bjorn Helgaas --- arch/powerpc/platforms/pseries/pci.c | 2 ++ drivers/pci/iov.c | 11 +++++++++++ include/linux/pci.h | 2 ++ 3 files changed, 15 insertions(+) diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 14a90cf471cc..48d3af026f90 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -63,6 +63,7 @@ int pseries_pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs) { /* Allocate PCI data */ add_dev_pci_data(pdev); + pci_vf_drivers_autoprobe(pdev, false); return 0; } @@ -70,6 +71,7 @@ int pseries_pcibios_sriov_disable(struct pci_dev *pdev) { /* Release PCI data */ remove_dev_pci_data(pdev); + pci_vf_drivers_autoprobe(pdev, true); return 0; } #endif diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index ac41c8be9200..1440e48094f4 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -634,6 +634,17 @@ void pci_restore_iov_state(struct pci_dev *dev) } /** + * pci_vf_drivers_autoprobe - set PF property drivers_autoprobe for VFs + * @dev: the PCI device + * @auto_probe: set VF drivers auto probe flag + */ +void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool auto_probe) +{ + if (dev->is_physfn) + dev->sriov->drivers_autoprobe = auto_probe; +} + +/** * pci_iov_bus_range - find bus range used by Virtual Function * @bus: the PCI bus * diff --git a/include/linux/pci.h b/include/linux/pci.h index f4f8ee5a7362..17a08554baa2 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1965,6 +1965,7 @@ int pci_vfs_assigned(struct pci_dev *dev); int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); int pci_sriov_get_totalvfs(struct pci_dev *dev); resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno); +void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe); #else static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id) { @@ -1992,6 +1993,7 @@ static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) { return 0; } static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) { return 0; } +static inline void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe) { } #endif #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)