From patchwork Tue Jul 6 02:36:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhu, Lingshan" X-Patchwork-Id: 12359701 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 168BBC07E99 for ; Tue, 6 Jul 2021 02:42:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4FD76196A for ; Tue, 6 Jul 2021 02:42:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229942AbhGFCpU (ORCPT ); Mon, 5 Jul 2021 22:45:20 -0400 Received: from mga11.intel.com ([192.55.52.93]:13832 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229781AbhGFCpT (ORCPT ); Mon, 5 Jul 2021 22:45:19 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10036"; a="206037247" X-IronPort-AV: E=Sophos;i="5.83,327,1616482800"; d="scan'208";a="206037247" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jul 2021 19:42:41 -0700 X-IronPort-AV: E=Sophos;i="5.83,327,1616482800"; d="scan'208";a="496320553" Received: from unknown (HELO localhost.localdomain.bj.intel.com) ([10.240.192.107]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Jul 2021 19:42:40 -0700 From: Zhu Lingshan To: jasowang@redhat.com, mst@redhat.com Cc: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, Zhu Lingshan Subject: [PATCH V3 1/2] vDPA/ifcvf: introduce get_dev_type() which returns virtio dev id Date: Tue, 6 Jul 2021 10:36:48 +0800 Message-Id: <20210706023649.23360-2-lingshan.zhu@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210706023649.23360-1-lingshan.zhu@intel.com> References: <20210706023649.23360-1-lingshan.zhu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This commit introduces a new function get_dev_type() which returns the virtio device id of a device, to avoid duplicated code. Signed-off-by: Zhu Lingshan Acked-by: Jason Wang --- drivers/vdpa/ifcvf/ifcvf_main.c | 34 ++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c index bc1d59f316d1..5f70ab1283a0 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -442,6 +442,26 @@ static const struct vdpa_config_ops ifc_vdpa_ops = { .set_config_cb = ifcvf_vdpa_set_config_cb, }; +static u32 get_dev_type(struct pci_dev *pdev) +{ + u32 dev_type; + + /* This drirver drives both modern virtio devices and transitional + * devices in modern mode. + * vDPA requires feature bit VIRTIO_F_ACCESS_PLATFORM, + * so legacy devices and transitional devices in legacy + * mode will not work for vDPA, this driver will not + * drive devices with legacy interface. + */ + + if (pdev->device < 0x1040) + dev_type = pdev->subsystem_device; + else + dev_type = pdev->device - 0x1040; + + return dev_type; +} + static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct device *dev = &pdev->dev; @@ -486,19 +506,7 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id) pci_set_drvdata(pdev, adapter); vf = &adapter->vf; - - /* This drirver drives both modern virtio devices and transitional - * devices in modern mode. - * vDPA requires feature bit VIRTIO_F_ACCESS_PLATFORM, - * so legacy devices and transitional devices in legacy - * mode will not work for vDPA, this driver will not - * drive devices with legacy interface. - */ - if (pdev->device < 0x1040) - vf->dev_type = pdev->subsystem_device; - else - vf->dev_type = pdev->device - 0x1040; - + vf->dev_type = get_dev_type(pdev); vf->base = pcim_iomap_table(pdev); adapter->pdev = pdev;