From patchwork Mon Nov 9 03:22:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huazhong Tan X-Patchwork-Id: 322110 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 839DCC4742C for ; Mon, 9 Nov 2020 03:22:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 558CC206C1 for ; Mon, 9 Nov 2020 03:22:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729419AbgKIDWo (ORCPT ); Sun, 8 Nov 2020 22:22:44 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:7434 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729316AbgKIDWg (ORCPT ); Sun, 8 Nov 2020 22:22:36 -0500 Received: from DGGEMS405-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4CTxBN55g6z74nK; Mon, 9 Nov 2020 11:22:20 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS405-HUB.china.huawei.com (10.3.19.205) with Microsoft SMTP Server id 14.3.487.0; Mon, 9 Nov 2020 11:22:18 +0800 From: Huazhong Tan To: CC: , , , , , , Huazhong Tan Subject: [PATCH V2 net-next 11/11] net: hns3: add debugfs support for interrupt coalesce Date: Mon, 9 Nov 2020 11:22:39 +0800 Message-ID: <1604892159-19990-12-git-send-email-tanhuazhong@huawei.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604892159-19990-1-git-send-email-tanhuazhong@huawei.com> References: <1604892159-19990-1-git-send-email-tanhuazhong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Since user may need to check the current configuration of the interrupt coalesce, so add debugfs support for query this info, which includes DIM profile, coalesce configuration of both software and hardware. Signed-off-by: Huazhong Tan --- drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 126 +++++++++++++++++++++ 1 file changed, 126 insertions(+) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c index a5ebca8..26fa69a 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c @@ -12,6 +12,93 @@ static struct dentry *hns3_dbgfs_root; +static ssize_t hns3_dbg_coal_write(struct file *filp, const char __user *buffer, + size_t count, loff_t *ppos) +{ + struct hnae3_handle *h = filp->private_data; + struct hns3_nic_priv *priv = h->priv; + struct hns3_enet_tqp_vector *tqp_vector; + struct hns3_enet_coalesce *coal; + u8 __iomem *base_addr; + int uncopied_bytes; + unsigned int idx; + struct dim *dim; + char *cmd_buf; + + if (*ppos != 0) + return 0; + + if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state)) { + dev_err(&h->pdev->dev, "device is not initialized\n"); + return -EFAULT; + } + + cmd_buf = kzalloc(count + 1, GFP_KERNEL); + if (!cmd_buf) + return -ENOMEM; + + uncopied_bytes = copy_from_user(cmd_buf, buffer, count); + if (uncopied_bytes) { + kfree(cmd_buf); + return -EFAULT; + } + + cmd_buf[count] = '\0'; + + if (kstrtouint(cmd_buf, 0, &idx)) + idx = 0; + + if (idx >= priv->vector_num) { + dev_err(&h->pdev->dev, + "vector index(%u) is out of range(0-%u)\n", idx, + priv->vector_num - 1); + kfree(cmd_buf); + return -EINVAL; + } + + tqp_vector = &priv->tqp_vector[idx]; + coal = &tqp_vector->tx_group.coal; + dim = &tqp_vector->tx_group.dim; + base_addr = tqp_vector->mask_addr; + + dev_info(&h->pdev->dev, "vector[%u] interrupt coalesce info:\n", idx); + dev_info(&h->pdev->dev, + "TX DIM info state = %d profile_ix = %d mode = %d tune_state = %d steps_right = %d steps_left = %d tired = %d\n", + dim->state, dim->profile_ix, dim->mode, dim->tune_state, + dim->steps_right, dim->steps_left, dim->tired); + + dev_info(&h->pdev->dev, "TX GL info sw_gl = %u, hw_gl = %u\n", + coal->int_gl, + readl(base_addr + HNS3_VECTOR_GL1_OFFSET)); + + if (coal->ql_enable) + dev_info(&h->pdev->dev, "TX QL info sw_ql = %u, hw_ql = %u\n", + coal->int_ql, + readl(base_addr + HNS3_VECTOR_TX_QL_OFFSET)); + + coal = &tqp_vector->rx_group.coal; + dim = &tqp_vector->rx_group.dim; + + dev_info(&h->pdev->dev, + "RX dim_info state = %d profile_ix = %d mode = %d tune_state = %d steps_right = %d steps_left = %d tired = %d\n", + dim->state, dim->profile_ix, dim->mode, dim->tune_state, + dim->steps_right, dim->steps_left, dim->tired); + + dev_info(&h->pdev->dev, "RX GL info sw_gl = %u, hw_gl = %u\n", + coal->int_gl, + readl(base_addr + HNS3_VECTOR_GL0_OFFSET)); + + if (coal->ql_enable) + dev_info(&h->pdev->dev, "RX QL info sw_ql = %u, hw_ql = %u\n", + coal->int_ql, + readl(base_addr + HNS3_VECTOR_RX_QL_OFFSET)); + + kfree(cmd_buf); + cmd_buf = NULL; + + return count; +} + static int hns3_dbg_queue_info(struct hnae3_handle *h, const char *cmd_buf) { @@ -352,6 +439,35 @@ static void hns3_dbg_dev_specs(struct hnae3_handle *h) dev_info(priv->dev, "MAX INT GL: %u\n", dev_specs->max_int_gl); } +static ssize_t hns3_dbg_coal_read(struct file *filp, char __user *buffer, + size_t count, loff_t *ppos) +{ + int uncopy_bytes; + char *buf; + int len; + + if (*ppos != 0) + return 0; + + if (count < HNS3_DBG_READ_LEN) + return -ENOSPC; + + buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len = scnprintf(buf, HNS3_DBG_READ_LEN, "%s\n", + "Please echo index to coal"); + uncopy_bytes = copy_to_user(buffer, buf, len); + + kfree(buf); + + if (uncopy_bytes) + return -EFAULT; + + return (*ppos = len); +} + static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer, size_t count, loff_t *ppos) { @@ -452,6 +568,13 @@ static const struct file_operations hns3_dbg_cmd_fops = { .write = hns3_dbg_cmd_write, }; +static const struct file_operations hns3_dbg_coal_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = hns3_dbg_coal_read, + .write = hns3_dbg_coal_write, +}; + void hns3_dbg_init(struct hnae3_handle *handle) { const char *name = pci_name(handle->pdev); @@ -460,6 +583,9 @@ void hns3_dbg_init(struct hnae3_handle *handle) debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle, &hns3_dbg_cmd_fops); + + debugfs_create_file("coal", 0600, handle->hnae3_dbgfs, handle, + &hns3_dbg_coal_fops); } void hns3_dbg_uninit(struct hnae3_handle *handle)