From patchwork Sun Aug 13 14:51:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petr Pavlu X-Patchwork-Id: 13352137 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ED226C001B0 for ; Sun, 13 Aug 2023 14:52:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229975AbjHMOwZ (ORCPT ); Sun, 13 Aug 2023 10:52:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231408AbjHMOwT (ORCPT ); Sun, 13 Aug 2023 10:52:19 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC2B8171A; Sun, 13 Aug 2023 07:52:08 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id DC99321972; Sun, 13 Aug 2023 14:52:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1691938325; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bVYQLZadpbIHkiHRlc0Nojw7TxPVG8nKYGsIyAJfqiI=; b=MfrE+Cq3EKlLS6SO46s95zHEf51oaOR4LdpjZ8Oeizqqy9aBZ9NcGEjb7jkVuov+d0/4J8 aqe22Im6Nu0zYE4ajNazfOyLQv1bI93jbYOsDgD5SU0fjVvXZOuxyYkC11bEPjUqBUycAD 8i0nRjnU/PxSPH3psS8gXkv6WyrggCI= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id A9AB71322C; Sun, 13 Aug 2023 14:52:05 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 8JulKBXu2GSDFAAAMHmgww (envelope-from ); Sun, 13 Aug 2023 14:52:05 +0000 From: Petr Pavlu To: tariqt@nvidia.com, yishaih@nvidia.com, leon@kernel.org Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, jgg@ziepe.ca, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org, Petr Pavlu , Leon Romanovsky Subject: [PATCH net-next v2 08/10] mlx4: Connect the ethernet part to the auxiliary bus Date: Sun, 13 Aug 2023 16:51:25 +0200 Message-Id: <20230813145127.10653-9-petr.pavlu@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230813145127.10653-1-petr.pavlu@suse.com> References: <20230813145127.10653-1-petr.pavlu@suse.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Use the auxiliary bus to perform device management of the ethernet part of the mlx4 driver. Signed-off-by: Petr Pavlu Tested-by: Leon Romanovsky Reviewed-by: Leon Romanovsky Acked-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx4/en_main.c | 65 ++++++++++++++------ drivers/net/ethernet/mellanox/mlx4/intf.c | 13 +++- 2 files changed, 58 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c index 263f9274927b..8a7e3aabbcfd 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c @@ -222,9 +222,11 @@ static int mlx4_en_event(struct notifier_block *this, unsigned long event, return NOTIFY_DONE; } -static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr) +static void mlx4_en_remove(struct auxiliary_device *adev) { - struct mlx4_en_dev *mdev = endev_ptr; + struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev); + struct mlx4_dev *dev = madev->mdev; + struct mlx4_en_dev *mdev = auxiliary_get_drvdata(adev); int i; mlx4_unregister_event_notifier(dev, &mdev->mlx_nb); @@ -247,27 +249,36 @@ static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr) kfree(mdev); } -static void *mlx4_en_add(struct mlx4_dev *dev) +static int mlx4_en_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) { + struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev); + struct mlx4_dev *dev = madev->mdev; struct mlx4_en_dev *mdev; int err, i; printk_once(KERN_INFO "%s", mlx4_en_version); mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); - if (!mdev) + if (!mdev) { + err = -ENOMEM; goto err_free_res; + } - if (mlx4_pd_alloc(dev, &mdev->priv_pdn)) + err = mlx4_pd_alloc(dev, &mdev->priv_pdn); + if (err) goto err_free_dev; - if (mlx4_uar_alloc(dev, &mdev->priv_uar)) + err = mlx4_uar_alloc(dev, &mdev->priv_uar); + if (err) goto err_pd; mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE); - if (!mdev->uar_map) + if (!mdev->uar_map) { + err = -ENOMEM; goto err_uar; + } spin_lock_init(&mdev->uar_lock); mdev->dev = dev; @@ -279,13 +290,15 @@ static void *mlx4_en_add(struct mlx4_dev *dev) if (!mdev->LSO_support) mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n"); - if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull, - MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, - 0, 0, &mdev->mr)) { + err = mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull, + MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, 0, 0, + &mdev->mr); + if (err) { mlx4_err(mdev, "Failed allocating memory region\n"); goto err_map; } - if (mlx4_mr_enable(mdev->dev, &mdev->mr)) { + err = mlx4_mr_enable(mdev->dev, &mdev->mr); + if (err) { mlx4_err(mdev, "Failed enabling memory region\n"); goto err_mr; } @@ -305,8 +318,10 @@ static void *mlx4_en_add(struct mlx4_dev *dev) * Note: we cannot use the shared workqueue because of deadlocks caused * by the rtnl lock */ mdev->workqueue = create_singlethread_workqueue("mlx4_en"); - if (!mdev->workqueue) + if (!mdev->workqueue) { + err = -ENOMEM; goto err_mr; + } /* At this stage all non-port specific tasks are complete: * mark the card state as up */ @@ -334,7 +349,8 @@ static void *mlx4_en_add(struct mlx4_dev *dev) mlx4_err(mdev, "Failed to create netdev notifier\n"); } - return mdev; + auxiliary_set_drvdata(adev, mdev); + return 0; err_mr: (void) mlx4_mr_free(dev, &mdev->mr); @@ -348,12 +364,23 @@ static void *mlx4_en_add(struct mlx4_dev *dev) err_free_dev: kfree(mdev); err_free_res: - return NULL; + return err; } -static struct mlx4_interface mlx4_en_interface = { - .add = mlx4_en_add, - .remove = mlx4_en_remove, +static const struct auxiliary_device_id mlx4_en_id_table[] = { + { .name = MLX4_ADEV_NAME ".eth" }, + {}, +}; + +MODULE_DEVICE_TABLE(auxiliary, mlx4_en_id_table); + +static struct mlx4_adrv mlx4_en_adrv = { + .adrv = { + .name = "eth", + .probe = mlx4_en_probe, + .remove = mlx4_en_remove, + .id_table = mlx4_en_id_table, + }, .protocol = MLX4_PROT_ETH, }; @@ -383,12 +410,12 @@ static int __init mlx4_en_init(void) mlx4_en_verify_params(); mlx4_en_init_ptys2ethtool_map(); - return mlx4_register_interface(&mlx4_en_interface); + return mlx4_register_auxiliary_driver(&mlx4_en_adrv); } static void __exit mlx4_en_cleanup(void) { - mlx4_unregister_interface(&mlx4_en_interface); + mlx4_unregister_auxiliary_driver(&mlx4_en_adrv); } module_init(mlx4_en_init); diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c index 4b1e18e4a682..0a27820ece2e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/intf.c +++ b/drivers/net/ethernet/mellanox/mlx4/intf.c @@ -50,10 +50,21 @@ static LIST_HEAD(dev_list); static DEFINE_MUTEX(intf_mutex); static DEFINE_IDA(mlx4_adev_ida); +static bool is_eth_supported(struct mlx4_dev *dev) +{ + for (int port = 1; port <= dev->caps.num_ports; port++) + if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) + return true; + + return false; +} + static const struct mlx4_adev_device { const char *suffix; bool (*is_supported)(struct mlx4_dev *dev); -} mlx4_adev_devices[1] = {}; +} mlx4_adev_devices[] = { + { "eth", is_eth_supported }, +}; int mlx4_adev_init(struct mlx4_dev *dev) {