From patchwork Thu Aug 19 12:33:35 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: 12447089 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=-14.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,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 902A6C432BE for ; Thu, 19 Aug 2021 12:34:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7852761157 for ; Thu, 19 Aug 2021 12:34:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237068AbhHSMfG (ORCPT ); Thu, 19 Aug 2021 08:35:06 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:40954 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235893AbhHSMfE (ORCPT ); Thu, 19 Aug 2021 08:35:04 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 17JCXtus105081; Thu, 19 Aug 2021 07:33:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1629376435; bh=uIdqzpeb6rsr/wPaBaqhSb1jIF6z59bQ7qEZwC/9NPk=; h=From:To:CC:Subject:Date; b=TMNvhldexbHQQJ2i+PQC9/mdoCg/F4vESuBTMcgWDUp7RCZFNg/qYmZhhAtVE332J bcR6a60OmrV52UKcZhDeLX+XO12ut5Oak/6zZmOHjRv8xdbC4PvYAvft2vWrOJhW8T Tat9cmSjeSrD6LDHPP4AjiUrh8cJvZoVUUGflIeE= Received: from DLEE102.ent.ti.com (dlee102.ent.ti.com [157.170.170.32]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 17JCXtJa093161 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 19 Aug 2021 07:33:55 -0500 Received: from DLEE100.ent.ti.com (157.170.170.30) by DLEE102.ent.ti.com (157.170.170.32) 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 07:33:54 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DLEE100.ent.ti.com (157.170.170.30) 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 07:33:54 -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 17JCXlZO035715; Thu, 19 Aug 2021 07:33:48 -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 0/8] Add SR-IOV support in PCIe Endpoint Core Date: Thu, 19 Aug 2021 18:03:35 +0530 Message-ID: <20210819123343.1951-1-kishon@ti.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Patch series *) Adds support to add virtual functions to enable endpoint controller which supports SR-IOV capability *) Add support in Cadence endpoint driver to configure virtual functions *) Enable pci_endpoint_test driver to create pci_device for virtual functions v1 of the patch series can be found at [1] v2 of the patch series can be found at [2] v3 of the patch series can be found at [3] v4 of the patch series can be found at [4] v5 of the patch series can be found at [5] v6 of the patch series can be found at [6] v7 of the patch series can be found at [7] v8 of the patch series can be found at [8] Here both physical functions and virtual functions use the same pci_endpoint_test driver and existing pcitest utility can be used to test virtual functions as well. Changes from v8: 1) Include pci-epf.h in pcie-cadence.h and use BAR_4 instead of 4 2) Get reg for configuring BAR using if..else.. for physical function and virtual function instead of over-writing reg for virtual function. Changes from v7: 1) Added conditional operator to consicely write code to configure BAR (Added a new patch to first simplify configuring BAR for physical function) 2) Return error if virtual function number is > 1 for configuring config space header Changes from v6: *) Rebased to 5.14-rc4 Changes from v5: *) Rebased to 5.13-rc1 Changes from v4: *) Added a fix in Cadence driver which was overwriting BAR configuration of physical function. *) Didn't include Tom's Acked-by since Cadence driver is modified in this revision. Changes from v3: *) Fixed Rob's comment and added his Reviewed-by as suggested by him. Changes from v2: *) Fixed DT binding documentation comment by Rob *) Fixed the error check in pci-epc-core.c Changes from v1: *) Re-based and Re-worked to latest kernel 5.10.0-rc2+ (now has generic binding for EP) [1] -> http://lore.kernel.org/r/20191231113534.30405-1-kishon@ti.com [2] -> http://lore.kernel.org/r/20201112175358.2653-1-kishon@ti.com [3] -> https://lore.kernel.org/r/20210305050410.9201-1-kishon@ti.com [4] -> http://lore.kernel.org/r/20210310160943.7606-1-kishon@ti.com [5] -> https://lore.kernel.org/r/20210419083401.31628-1-kishon@ti.com [6] -> http://lore.kernel.org/r/20210517074723.10212-1-kishon@ti.com [7] -> https://lore.kernel.org/r/20210803050310.27122-1-kishon@ti.com [8] -> https://lore.kernel.org/r/20210811064656.15399-1-kishon@ti.com Kishon Vijay Abraham I (8): dt-bindings: PCI: pci-ep: Add binding to specify virtual function PCI: endpoint: Add support to add virtual function in endpoint core PCI: endpoint: Add support to link a physical function to a virtual function PCI: endpoint: Add virtual function number in pci_epc ops PCI: cadence: Simplify code to get register base address for configuring BAR PCI: cadence: Add support to configure virtual functions misc: pci_endpoint_test: Populate sriov_configure ops to configure SR-IOV device Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOV .../PCI/endpoint/pci-endpoint-cfs.rst | 12 +- .../devicetree/bindings/pci/pci-ep.yaml | 7 + drivers/misc/pci_endpoint_test.c | 1 + .../pci/controller/cadence/pcie-cadence-ep.c | 196 +++++++++++++----- drivers/pci/controller/cadence/pcie-cadence.h | 12 ++ .../pci/controller/dwc/pcie-designware-ep.c | 36 ++-- drivers/pci/controller/pcie-rcar-ep.c | 19 +- drivers/pci/controller/pcie-rockchip-ep.c | 18 +- drivers/pci/endpoint/functions/pci-epf-ntb.c | 89 ++++---- drivers/pci/endpoint/functions/pci-epf-test.c | 74 ++++--- drivers/pci/endpoint/pci-ep-cfs.c | 24 +++ drivers/pci/endpoint/pci-epc-core.c | 134 ++++++++---- drivers/pci/endpoint/pci-epf-core.c | 146 ++++++++++++- include/linux/pci-epc.h | 57 ++--- include/linux/pci-epf.h | 16 +- 15 files changed, 616 insertions(+), 225 deletions(-)