From patchwork Thu Aug 19 12:33:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kishon Vijay Abraham I X-Patchwork-Id: 12447085 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=-17.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 33E6DC432BE for ; Thu, 19 Aug 2021 12:35:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F16C760551 for ; Thu, 19 Aug 2021 12:35:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F16C760551 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ti.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=l0f6giGpd0uXPGTTSwQzG5g4y+YptZPwEi9WBnn5orc=; b=1+0lz8tOOy3r8K QSM2VEZkLVOCmNd9lU5ojLgX2hI1ROmRDuGH34WmAOz94VFRdRq8mhvSs3X/fOGB6FD2/gkR4ENV4 VdhC4R8Grzj/SxIQvhxUDumX6VdrDqweJqYlp7yKGrNb+YTrG/9qkgBSO+qJW48UG9pYxxBt9hhQ8 K61csvYB0galL3wCq4kslA/jDiVanj7arzt/VS/tnV0gbNtfa+i6S8ydmgxLODdV1sT2LQ3AMerKT k7i8uxE2RV4C5u1zvOGSmNPBWwve87VJlKJivdZYbOFCpbUBT+PBfsnJhrE4It32RTBQjD88dtIbS AlTn0vfHN/1Hd+CwlpBw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGhG7-008Jcp-CO; Thu, 19 Aug 2021 12:34:59 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mGhFa-008JNF-6D; Thu, 19 Aug 2021 12:34:32 +0000 Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 17JCYFNd105161; Thu, 19 Aug 2021 07:34:15 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1629376455; bh=xZP94/W6e+feo2IXbD5QHf0IlP942uGU++0kfiWPUQA=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=qK90ihm8ZTCDiy0YeI36BRVPEhCgyELzISZQxQjKUvFNdOI1iNOXzCsj45YSYRjLH qiexPgDwrPDeZRiKpogI2i29fjS+57nBOdx5/hw5EqZRRgU5X2InXqnAaHmQhFX9l8 3N987oppTUnVCRVvSXkXVmgdHhlc8f0rVp1nRou8= Received: from DLEE103.ent.ti.com (dlee103.ent.ti.com [157.170.170.33]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 17JCYF9b107283 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 19 Aug 2021 07:34:15 -0500 Received: from DLEE111.ent.ti.com (157.170.170.22) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Thu, 19 Aug 2021 07:34:14 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE111.ent.ti.com (157.170.170.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2 via Frontend Transport; Thu, 19 Aug 2021 07:34:14 -0500 Received: from a0393678-ssd.dal.design.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 17JCXlZR035715; Thu, 19 Aug 2021 07:34:08 -0500 From: Kishon Vijay Abraham I To: Lorenzo Pieralisi , Bjorn Helgaas , Jonathan Corbet , Rob Herring , Arnd Bergmann CC: Greg Kroah-Hartman , Tom Joseph , Jingoo Han , Gustavo Pimentel , Marek Vasut , Yoshihiro Shimoda , Shawn Lin , Heiko Stuebner , , , , , , , , Kishon Vijay Abraham I Subject: [PATCH v9 3/8] PCI: endpoint: Add support to link a physical function to a virtual function Date: Thu, 19 Aug 2021 18:03:38 +0530 Message-ID: <20210819123343.1951-4-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210819123343.1951-1-kishon@ti.com> References: <20210819123343.1951-1-kishon@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210819_053426_363796_DD865AAC X-CRM114-Status: GOOD ( 12.76 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.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 f3a8b833b479..999911801877 100644 --- a/drivers/pci/endpoint/pci-ep-cfs.c +++ b/drivers/pci/endpoint/pci-ep-cfs.c @@ -475,6 +475,28 @@ 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); @@ -487,6 +509,8 @@ 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, };