From patchwork Thu Dec 12 14:23:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jijie Shao X-Patchwork-Id: 13905261 X-Patchwork-Delegate: kuba@kernel.org Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 53A8442AA6; Thu, 12 Dec 2024 14:30:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734013830; cv=none; b=QAbjdBWG0DhXqjQsX4yFaz9eU4VNK1xhxCaOrQ2YeMokIxSEjQ6wp558QQSXhzPhEQcNzJ7b64G5lPc8torpqO66d26eVcHa+ZociOdkZ49sPeVH73FDF3/g/SqlOgrXsRySIOQbvooStLLO1yPto6xrMGEcHok9RkcBHikNuoI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734013830; c=relaxed/simple; bh=5LwgWIIHonOp8bWxBhk5Ro0DEUzXb3/Ve6CKZenbTzY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=bXJUbpgvHPVDUwBddawIufUTMyk5mCNHkA1oU6MtDOaY1RiBEUGEwNjWmaCiUTQioNaubFaEyUXL8dXSveZGJZOBcBXypIYk7tcKqrED1dDOIN8EI29bZqcPG48CltBivlgeXdYD+SLLZHqphGfQt7fxs7sg3pJZfypQYzglyDs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.162.254]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Y8FDs2HprzhZW9; Thu, 12 Dec 2024 22:27:57 +0800 (CST) Received: from kwepemk100013.china.huawei.com (unknown [7.202.194.61]) by mail.maildlp.com (Postfix) with ESMTPS id 2FF3A180217; Thu, 12 Dec 2024 22:30:23 +0800 (CST) Received: from localhost.localdomain (10.90.30.45) by kwepemk100013.china.huawei.com (7.202.194.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 12 Dec 2024 22:30:22 +0800 From: Jijie Shao To: , , , , , , CC: , , , , , , , , , , , , , , Subject: [PATCH V7 net-next 1/7] net: hibmcge: Add debugfs supported in this module Date: Thu, 12 Dec 2024 22:23:28 +0800 Message-ID: <20241212142334.1024136-2-shaojijie@huawei.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20241212142334.1024136-1-shaojijie@huawei.com> References: <20241212142334.1024136-1-shaojijie@huawei.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemk100013.china.huawei.com (7.202.194.61) X-Patchwork-Delegate: kuba@kernel.org This patch initializes debugfs and creates root directory for each device. The tx_ring and rx_ring debugfs files are implemented together. Signed-off-by: Jijie Shao Reviewed-by: Simon Horman --- ChangeLog: v6 -> v7: - Optimize the wrapper name, suggested by Jakub. v6: https://lore.kernel.org/all/20241210134855.2864577-1-shaojijie@huawei.com/ v5 -> v6: - Drop debugfs_create_devm_dir() helper, suggested by Greg KH. v5: https://lore.kernel.org/all/20241206111629.3521865-1-shaojijie@huawei.com/ v4 -> v5: - Use debugfs_create_devm_dir() helper, suggested by Jakub. v4: https://lore.kernel.org/all/20241203150131.3139399-2-shaojijie@huawei.com/ v1 -> v2: - Remove debugfs file 'dev_specs' because the dump register does the same thing, suggested by Andrew. - Move 'tx timeout cnt' from debugfs to ethtool -S, suggested by Andrew. - Add a new patch for debugfs file 'irq_info', suggested by Andrew. - Ignore the error code of the debugfs initialization failure, suggested by Andrew. v1: https://lore.kernel.org/all/20241023134213.3359092-3-shaojijie@huawei.com/ --- .../net/ethernet/hisilicon/hibmcge/Makefile | 3 +- .../ethernet/hisilicon/hibmcge/hbg_debugfs.c | 95 +++++++++++++++++++ .../ethernet/hisilicon/hibmcge/hbg_debugfs.h | 12 +++ .../net/ethernet/hisilicon/hibmcge/hbg_main.c | 29 +++++- 4 files changed, 136 insertions(+), 3 deletions(-) create mode 100644 drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.c create mode 100644 drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.h diff --git a/drivers/net/ethernet/hisilicon/hibmcge/Makefile b/drivers/net/ethernet/hisilicon/hibmcge/Makefile index ae58ac38c206..1a0ec2fb8c24 100644 --- a/drivers/net/ethernet/hisilicon/hibmcge/Makefile +++ b/drivers/net/ethernet/hisilicon/hibmcge/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_HIBMCGE) += hibmcge.o -hibmcge-objs = hbg_main.o hbg_hw.o hbg_mdio.o hbg_irq.o hbg_txrx.o hbg_ethtool.o +hibmcge-objs = hbg_main.o hbg_hw.o hbg_mdio.o hbg_irq.o hbg_txrx.o hbg_ethtool.o \ + hbg_debugfs.o diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.c b/drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.c new file mode 100644 index 000000000000..4fd7d9b35dbc --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0+ +// Copyright (c) 2024 Hisilicon Limited. + +#include +#include +#include +#include +#include "hbg_common.h" +#include "hbg_debugfs.h" +#include "hbg_hw.h" +#include "hbg_irq.h" +#include "hbg_txrx.h" + +static struct dentry *hbg_dbgfs_root; + +struct hbg_dbg_info { + const char *name; + int (*read)(struct seq_file *seq, void *data); +}; + +#define str_true_false(state) ((state) ? "true" : "false") + +static void hbg_dbg_ring(struct hbg_priv *priv, struct hbg_ring *ring, + struct seq_file *s) +{ + u32 irq_mask = ring->dir == HBG_DIR_TX ? HBG_INT_MSK_TX_B : + HBG_INT_MSK_RX_B; + + seq_printf(s, "ring used num: %u\n", + hbg_get_queue_used_num(ring)); + seq_printf(s, "ring max num: %u\n", ring->len); + seq_printf(s, "ring head: %u, tail: %u\n", ring->head, ring->tail); + seq_printf(s, "fifo used num: %u\n", + hbg_hw_get_fifo_used_num(priv, ring->dir)); + seq_printf(s, "fifo max num: %u\n", + hbg_get_spec_fifo_max_num(priv, ring->dir)); + seq_printf(s, "irq enabled: %s\n", + str_true_false(hbg_hw_irq_is_enabled(priv, irq_mask))); +} + +static int hbg_dbg_tx_ring(struct seq_file *s, void *unused) +{ + struct net_device *netdev = dev_get_drvdata(s->private); + struct hbg_priv *priv = netdev_priv(netdev); + + hbg_dbg_ring(priv, &priv->tx_ring, s); + return 0; +} + +static int hbg_dbg_rx_ring(struct seq_file *s, void *unused) +{ + struct net_device *netdev = dev_get_drvdata(s->private); + struct hbg_priv *priv = netdev_priv(netdev); + + hbg_dbg_ring(priv, &priv->rx_ring, s); + return 0; +} + +static const struct hbg_dbg_info hbg_dbg_infos[] = { + { "tx_ring", hbg_dbg_tx_ring }, + { "rx_ring", hbg_dbg_rx_ring }, +}; + +static void hbg_debugfs_uninit(void *data) +{ + debugfs_remove_recursive((struct dentry *)data); +} + +void hbg_debugfs_init(struct hbg_priv *priv) +{ + const char *name = pci_name(priv->pdev); + struct device *dev = &priv->pdev->dev; + struct dentry *root; + u32 i; + + root = debugfs_create_dir(name, hbg_dbgfs_root); + + for (i = 0; i < ARRAY_SIZE(hbg_dbg_infos); i++) + debugfs_create_devm_seqfile(dev, hbg_dbg_infos[i].name, + root, hbg_dbg_infos[i].read); + + /* Ignore the failure because debugfs is not a key feature. */ + devm_add_action_or_reset(dev, hbg_debugfs_uninit, root); +} + +void hbg_debugfs_register(void) +{ + hbg_dbgfs_root = debugfs_create_dir("hibmcge", NULL); +} + +void hbg_debugfs_unregister(void) +{ + debugfs_remove_recursive(hbg_dbgfs_root); + hbg_dbgfs_root = NULL; +} diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.h b/drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.h new file mode 100644 index 000000000000..80670d66bbeb --- /dev/null +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_debugfs.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* Copyright (c) 2024 Hisilicon Limited. */ + +#ifndef __HBG_DEBUGFS_H +#define __HBG_DEBUGFS_H + +void hbg_debugfs_register(void); +void hbg_debugfs_unregister(void); + +void hbg_debugfs_init(struct hbg_priv *priv); + +#endif diff --git a/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c b/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c index 75505fb5cc4a..7a03fdfa32a7 100644 --- a/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c +++ b/drivers/net/ethernet/hisilicon/hibmcge/hbg_main.c @@ -11,6 +11,7 @@ #include "hbg_irq.h" #include "hbg_mdio.h" #include "hbg_txrx.h" +#include "hbg_debugfs.h" static void hbg_change_mtu(struct hbg_priv *priv, int new_mtu); @@ -160,7 +161,12 @@ static int hbg_init(struct hbg_priv *priv) if (ret) return ret; - return hbg_mdio_init(priv); + ret = hbg_mdio_init(priv); + if (ret) + return ret; + + hbg_debugfs_init(priv); + return 0; } static int hbg_pci_init(struct pci_dev *pdev) @@ -245,7 +251,26 @@ static struct pci_driver hbg_driver = { .id_table = hbg_pci_tbl, .probe = hbg_probe, }; -module_pci_driver(hbg_driver); + +static int __init hbg_module_init(void) +{ + int ret; + + hbg_debugfs_register(); + ret = pci_register_driver(&hbg_driver); + if (ret) + hbg_debugfs_unregister(); + + return ret; +} +module_init(hbg_module_init); + +static void __exit hbg_module_exit(void) +{ + pci_unregister_driver(&hbg_driver); + hbg_debugfs_unregister(); +} +module_exit(hbg_module_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Huawei Tech. Co., Ltd.");