From patchwork Sun Mar 14 12:42:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 12137327 X-Patchwork-Delegate: bhelgaas@google.com 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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 A9ECEC433E0 for ; Sun, 14 Mar 2021 12:44:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 879B764EE7 for ; Sun, 14 Mar 2021 12:44:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235388AbhCNMno (ORCPT ); Sun, 14 Mar 2021 08:43:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:46614 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235212AbhCNMnP (ORCPT ); Sun, 14 Mar 2021 08:43:15 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D70BB64EE8; Sun, 14 Mar 2021 12:43:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1615725795; bh=DzMR4P+0niYuVh8igoa+/R3gS8f24sqwSHT7RhzRJMI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NiKKkiE3YCMo4cdUXKX8R4z6sdZ7uZl2W+rb0HbSHdXO4itxqfqp19V/8OjimFrBH l94OOAab4pYyin7idl9Hb2WIpdn7Z4uCqpzA27Hor1w2UIkcYHy1QSDMSlMNI2wddu KQnWON24G9euhWuaAA0MgCllRp42p4ueR0YI3xNak8oY4IXCsWGJw70Q8eWU/4um/v 1gk85019o3eFoIGCeWU4E7gA+pbn7dbcvkXqI1pmNruS8fLgMesAcE+W2zdglPORJR b8fyU7L7MmCaa8bnF93VEfDq4Cw1i3uiXnIB9c2XHtgTXb+B2PdED7xIUdizQcvPBZ VnjrV9+YdCSOw== From: Leon Romanovsky To: Bjorn Helgaas , Saeed Mahameed Cc: Jason Gunthorpe , Alexander Duyck , Jakub Kicinski , linux-pci@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Don Dutile , Alex Williamson , "David S . Miller" , Greg Kroah-Hartman Subject: [PATCH mlx5-next v8 4/4] net/mlx5: Implement sriov_get_vf_total_msix/count() callbacks Date: Sun, 14 Mar 2021 14:42:56 +0200 Message-Id: <20210314124256.70253-5-leon@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210314124256.70253-1-leon@kernel.org> References: <20210314124256.70253-1-leon@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The mlx5 implementation executes a firmware command on the PF to change the configuration of the selected VF. Signed-off-by: Leon Romanovsky --- .../net/ethernet/mellanox/mlx5/core/main.c | 2 ++ .../ethernet/mellanox/mlx5/core/mlx5_core.h | 7 ++++ .../net/ethernet/mellanox/mlx5/core/sriov.c | 35 +++++++++++++++++++ 3 files changed, 44 insertions(+) -- 2.30.2 diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 0489712865b7..edca6bc87639 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -1700,6 +1700,8 @@ static struct pci_driver mlx5_core_driver = { .shutdown = shutdown, .err_handler = &mlx5_err_handler, .sriov_configure = mlx5_core_sriov_configure, + .sriov_get_vf_total_msix = mlx5_sriov_get_vf_total_msix, + .sriov_set_msix_vec_count = mlx5_core_sriov_set_msix_vec_count, }; static void mlx5_core_verify_params(void) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h index f0aed664dd35..99007f2d0424 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h @@ -140,6 +140,7 @@ void mlx5_sriov_cleanup(struct mlx5_core_dev *dev); int mlx5_sriov_attach(struct mlx5_core_dev *dev); void mlx5_sriov_detach(struct mlx5_core_dev *dev); int mlx5_core_sriov_configure(struct pci_dev *dev, int num_vfs); +int mlx5_core_sriov_set_msix_vec_count(struct pci_dev *vf, int msix_vec_count); int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id); int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id); int mlx5_create_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy, @@ -278,4 +279,10 @@ int mlx5_load_one(struct mlx5_core_dev *dev, bool boot); int mlx5_vport_get_other_func_cap(struct mlx5_core_dev *dev, u16 function_id, void *out); void mlx5_events_work_enqueue(struct mlx5_core_dev *dev, struct work_struct *work); +static inline u32 mlx5_sriov_get_vf_total_msix(struct pci_dev *pdev) +{ + struct mlx5_core_dev *dev = pci_get_drvdata(pdev); + + return MLX5_CAP_GEN_MAX(dev, num_total_dynamic_vf_msix); +} #endif /* __MLX5_CORE_H__ */ diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c index f0ec86a1c8a6..2338989d4403 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c @@ -187,6 +187,41 @@ int mlx5_core_sriov_configure(struct pci_dev *pdev, int num_vfs) return err ? err : num_vfs; } +int mlx5_core_sriov_set_msix_vec_count(struct pci_dev *vf, int msix_vec_count) +{ + struct pci_dev *pf = pci_physfn(vf); + struct mlx5_core_sriov *sriov; + struct mlx5_core_dev *dev; + int num_vf_msix, id; + + dev = pci_get_drvdata(pf); + num_vf_msix = MLX5_CAP_GEN_MAX(dev, num_total_dynamic_vf_msix); + if (!num_vf_msix) + return -EOPNOTSUPP; + + if (!msix_vec_count) + msix_vec_count = + mlx5_get_default_msix_vec_count(dev, pci_num_vf(pf)); + + sriov = &dev->priv.sriov; + + /* Reversed translation of PCI VF function number to the internal + * function_id, which exists in the name of virtfn symlink. + */ + for (id = 0; id < pci_num_vf(pf); id++) { + if (!sriov->vfs_ctx[id].enabled) + continue; + + if (vf->devfn == pci_iov_virtfn_devfn(pf, id)) + break; + } + + if (id == pci_num_vf(pf) || !sriov->vfs_ctx[id].enabled) + return -EINVAL; + + return mlx5_set_msix_vec_count(dev, id + 1, msix_vec_count); +} + int mlx5_sriov_attach(struct mlx5_core_dev *dev) { if (!mlx5_core_is_pf(dev) || !pci_num_vf(dev->pdev))