From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 ADAF4C2D0DC for ; Tue, 31 Dec 2019 11:34:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8143220409 for ; Tue, 31 Dec 2019 11:34:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="eYa84y0l" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727169AbfLaLeZ (ORCPT ); Tue, 31 Dec 2019 06:34:25 -0500 Received: from fllv0016.ext.ti.com ([198.47.19.142]:33442 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727145AbfLaLeY (ORCPT ); Tue, 31 Dec 2019 06:34:24 -0500 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id xBVBY0cx121219; Tue, 31 Dec 2019 05:34:01 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1577792041; bh=jqsa++lCvjyELh9SjLjw9ykSFWnOzndvoFRmjfRfvbM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=eYa84y0lK9EfPbFapBY8/3Zn/A3ew9pjim0tgw4m7cTU0eIFjgSdm8Ze1JeZ/oAbA JOpZtRaXas6AYgBNik3O4EQ5920P7vBptrM6GB2IuAZnThb+e6oPvhuZhjk93Ckt9u LcSsPpfar0v/aGEpD3RwU7/5EgKBM25/h88hpn38= Received: from DFLE104.ent.ti.com (dfle104.ent.ti.com [10.64.6.25]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id xBVBY0C4090355 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 31 Dec 2019 05:34:00 -0600 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Tue, 31 Dec 2019 05:34:00 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Tue, 31 Dec 2019 05:34:00 -0600 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id xBVBXX35024759; Tue, 31 Dec 2019 05:33:55 -0600 From: Kishon Vijay Abraham I To: Kishon Vijay Abraham I , Lorenzo Pieralisi , Bjorn Helgaas , Andrew Murray , Tom Joseph , Rob Herring , Arnd Bergmann , Jingoo Han , Gustavo Pimentel , Shawn Lin , Heiko Stuebner CC: , , Jonathan Corbet , Greg Kroah-Hartman , , , , Subject: [PATCH 4/7] PCI: endpoint: Add support to link a physical function to a virtual function Date: Tue, 31 Dec 2019 17:05:31 +0530 Message-ID: <20191231113534.30405-5-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191231113534.30405-1-kishon@ti.com> References: <20191231113534.30405-1-kishon@ti.com> MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org While the physical function has to be linked to endpoint controller, the virtual function has to be linked to a physical function. Add support to link a physical function to a virtual function in pci-ep-cfs. Signed-off-by: Kishon Vijay Abraham I --- drivers/pci/endpoint/pci-ep-cfs.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c index e7e8367eead1..c18ef626ada5 100644 --- a/drivers/pci/endpoint/pci-ep-cfs.c +++ b/drivers/pci/endpoint/pci-ep-cfs.c @@ -350,6 +350,28 @@ static struct configfs_attribute *pci_epf_attrs[] = { NULL, }; +static int pci_epf_vepf_link(struct config_item *epf_pf_item, + struct config_item *epf_vf_item) +{ + struct pci_epf_group *epf_vf_group = to_pci_epf_group(epf_vf_item); + struct pci_epf_group *epf_pf_group = to_pci_epf_group(epf_pf_item); + struct pci_epf *epf_pf = epf_pf_group->epf; + struct pci_epf *epf_vf = epf_vf_group->epf; + + return pci_epf_add_vepf(epf_pf, epf_vf); +} + +static void pci_epf_vepf_unlink(struct config_item *epf_pf_item, + struct config_item *epf_vf_item) +{ + struct pci_epf_group *epf_vf_group = to_pci_epf_group(epf_vf_item); + struct pci_epf_group *epf_pf_group = to_pci_epf_group(epf_pf_item); + struct pci_epf *epf_pf = epf_pf_group->epf; + struct pci_epf *epf_vf = epf_vf_group->epf; + + pci_epf_remove_vepf(epf_pf, epf_vf); +} + static void pci_epf_release(struct config_item *item) { struct pci_epf_group *epf_group = to_pci_epf_group(item); @@ -362,6 +384,8 @@ static void pci_epf_release(struct config_item *item) } static struct configfs_item_operations pci_epf_ops = { + .allow_link = pci_epf_vepf_link, + .drop_link = pci_epf_vepf_unlink, .release = pci_epf_release, }; -- 2.17.1