From patchwork Fri Aug 12 11:21:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sunil Kovvuri X-Patchwork-Id: 9276795 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1E956600CB for ; Fri, 12 Aug 2016 11:28:01 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D65328939 for ; Fri, 12 Aug 2016 11:28:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 024382897B; Fri, 12 Aug 2016 11:28:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,FREEMAIL_FROM,RCVD_IN_BL_SPAMCOP_NET,RCVD_IN_DNSWL_MED, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0C1E628939 for ; Fri, 12 Aug 2016 11:28:00 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bYAbH-0007mc-SB; Fri, 12 Aug 2016 11:26:08 +0000 Received: from mail-pa0-x243.google.com ([2607:f8b0:400e:c03::243]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bYAYg-0004Nk-PC for linux-arm-kernel@lists.infradead.org; Fri, 12 Aug 2016 11:23:31 +0000 Received: by mail-pa0-x243.google.com with SMTP id hh10so1373753pac.1 for ; Fri, 12 Aug 2016 04:23:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ybWzyCwDQ5o8WX/MlsINmRzC+uAZai2IxLu49/75IiM=; b=yf0nG+CvxCzwcI1zYaprya/faAIWEK/zEpl57UtA/vyr0jsGZ1aUlwV/9j4Okvm+sa sZU4YzHySSY3RCLTsEz9LkZQEAKG4Gd0cCgZJXZYAvPd4vrjSwgZzWHu4/cD1Zry+nZ0 2pPbd2ipjTsivBB/ok5q82jNp4PkC2G/kwgvdIuJzeUuSu1ePUDteqMEkU8RZdp7au97 2yzDg8PM1fYQsa3ddVbDwzS0tjd4euxZvu4WsnVQbhOc7sQeJVRheYb2wXSTsx0OONT6 ICI24cUjmvdrLZJQbNmtapm0jPOnIX2NX4axNDthBl5rCzZdA32ZbKsoKlSB+9h1R0+g 68Yw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=ybWzyCwDQ5o8WX/MlsINmRzC+uAZai2IxLu49/75IiM=; b=BkEX6E6QYxIirBNjKydrV6X6iF9J7TaRXLHR4mdbou9CaJOwReqNLSH5x4SURGu715 6rH/NzMVbW5D+eqEOawG0aCkZulX5ot5IJsDmNKmZ6Ts/YL4wQEpsqNxiXy3AYcT9rcR 8kvV/rvsYyBm+9vw1x2zG+hT4lBBYzPEM0KWF+EAzB882GaT/anZ+z8vXhdJyxgKchzK 3w7l1+UMY1q9ri/Mkl0s37Wf0sUbyJpG1WoUfQatAStdqKKapqaxmwQXeVcvzxS9gGMU 9d1uhA4oM1G3mDGwQVJDMo5Bjj/uDNaovgfc/l/T/niX/PRxuFrZjWXkKfQuygbUNO7y 0kPg== X-Gm-Message-State: AEkoouvU/9ATq36GSbdlqx2DoWBJpCrQk83Evcq/pqOuQUNKS1bapQRWanLUcxaWgCyEcg== X-Received: by 10.66.157.40 with SMTP id wj8mr25980914pab.53.1471000986086; Fri, 12 Aug 2016 04:23:06 -0700 (PDT) Received: from machine421.in.caveonetworks.com ([14.140.2.178]) by smtp.googlemail.com with ESMTPSA id ww14sm12306817pac.34.2016.08.12.04.23.03 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 12 Aug 2016 04:23:05 -0700 (PDT) From: sunil.kovvuri@gmail.com To: netdev@vger.kernel.org Subject: [PATCH v2 16/21] net: thunderx: Reset RXQ HW stats when interface is brought down Date: Fri, 12 Aug 2016 16:51:39 +0530 Message-Id: <1471000904-21715-17-git-send-email-sunil.kovvuri@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1471000904-21715-1-git-send-email-sunil.kovvuri@gmail.com> References: <1471000904-21715-1-git-send-email-sunil.kovvuri@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160812_042327_229832_3D74AB25 X-CRM114-Status: GOOD ( 14.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jerin Jacob , Sunil Goutham , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jerin Jacob When SQ/TXQ is reclaimed i.e reset it's stats also automatically reset by HW. This is not the case with RQ. Also VF doesn't have write access to statistics counter registers. Hence a new Mbox msg is introduced which supports resetting RQ, SQ and full Qset stats. Currently only RQ stats are being reset using this mbox message. Signed-off-by: Jerin Jacob Signed-off-by: Sunil Goutham --- drivers/net/ethernet/cavium/thunder/nic.h | 27 +++++++++++++ drivers/net/ethernet/cavium/thunder/nic_main.c | 45 ++++++++++++++++++++++ drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 15 ++++++++ 3 files changed, 87 insertions(+) diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h index 136db2a..dd63f96 100644 --- a/drivers/net/ethernet/cavium/thunder/nic.h +++ b/drivers/net/ethernet/cavium/thunder/nic.h @@ -347,6 +347,7 @@ struct nicvf { #define NIC_MBOX_MSG_PNICVF_PTR 0x14 /* Get primary qset nicvf ptr */ #define NIC_MBOX_MSG_SNICVF_PTR 0x15 /* Send sqet nicvf ptr to PVF */ #define NIC_MBOX_MSG_LOOPBACK 0x16 /* Set interface in loopback */ +#define NIC_MBOX_MSG_RESET_STAT_COUNTER 0x17 /* Reset statistics counters */ #define NIC_MBOX_MSG_CFG_DONE 0xF0 /* VF configuration done */ #define NIC_MBOX_MSG_SHUTDOWN 0xF1 /* VF is being shutdown */ @@ -463,6 +464,31 @@ struct set_loopback { bool enable; }; +/* Reset statistics counters */ +struct reset_stat_cfg { + u8 msg; + /* Bitmap to select NIC_PF_VNIC(vf_id)_RX_STAT(0..13) */ + u16 rx_stat_mask; + /* Bitmap to select NIC_PF_VNIC(vf_id)_TX_STAT(0..4) */ + u8 tx_stat_mask; + /* Bitmap to select NIC_PF_QS(0..127)_RQ(0..7)_STAT(0..1) + * bit14, bit15 NIC_PF_QS(vf_id)_RQ7_STAT(0..1) + * bit12, bit13 NIC_PF_QS(vf_id)_RQ6_STAT(0..1) + * .. + * bit2, bit3 NIC_PF_QS(vf_id)_RQ1_STAT(0..1) + * bit0, bit1 NIC_PF_QS(vf_id)_RQ0_STAT(0..1) + */ + u16 rq_stat_mask; + /* Bitmap to select NIC_PF_QS(0..127)_SQ(0..7)_STAT(0..1) + * bit14, bit15 NIC_PF_QS(vf_id)_SQ7_STAT(0..1) + * bit12, bit13 NIC_PF_QS(vf_id)_SQ6_STAT(0..1) + * .. + * bit2, bit3 NIC_PF_QS(vf_id)_SQ1_STAT(0..1) + * bit0, bit1 NIC_PF_QS(vf_id)_SQ0_STAT(0..1) + */ + u16 sq_stat_mask; +}; + /* 128 bit shared memory between PF and each VF */ union nic_mbx { struct { u8 msg; } msg; @@ -480,6 +506,7 @@ union nic_mbx { struct sqs_alloc sqs_alloc; struct nicvf_ptr nicvf; struct set_loopback lbk; + struct reset_stat_cfg reset_stat; }; #define NIC_NODE_ID_MASK 0x03 diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index c706b2e..167291b 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -793,6 +793,48 @@ static int nic_config_loopback(struct nicpf *nic, struct set_loopback *lbk) return 0; } +/* Reset statistics counters */ +static int nic_reset_stat_counters(struct nicpf *nic, + int vf, struct reset_stat_cfg *cfg) +{ + int i, stat, qnum; + u64 reg_addr; + + for (i = 0; i < RX_STATS_ENUM_LAST; i++) { + if (cfg->rx_stat_mask & BIT(i)) { + reg_addr = NIC_PF_VNIC_0_127_RX_STAT_0_13 | + (vf << NIC_QS_ID_SHIFT) | + (i << 3); + nic_reg_write(nic, reg_addr, 0); + } + } + + for (i = 0; i < TX_STATS_ENUM_LAST; i++) { + if (cfg->tx_stat_mask & BIT(i)) { + reg_addr = NIC_PF_VNIC_0_127_TX_STAT_0_4 | + (vf << NIC_QS_ID_SHIFT) | + (i << 3); + nic_reg_write(nic, reg_addr, 0); + } + } + + for (i = 0; i <= 15; i++) { + qnum = i >> 1; + stat = i & 1 ? 1 : 0; + reg_addr = (vf << NIC_QS_ID_SHIFT) | + (qnum << NIC_Q_NUM_SHIFT) | (stat << 3); + if (cfg->rq_stat_mask & BIT(i)) { + reg_addr |= NIC_PF_QSET_0_127_RQ_0_7_STAT_0_1; + nic_reg_write(nic, reg_addr, 0); + } + if (cfg->sq_stat_mask & BIT(i)) { + reg_addr |= NIC_PF_QSET_0_127_SQ_0_7_STAT_0_1; + nic_reg_write(nic, reg_addr, 0); + } + } + return 0; +} + static void nic_enable_vf(struct nicpf *nic, int vf, bool enable) { int bgx, lmac; @@ -942,6 +984,9 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) case NIC_MBOX_MSG_LOOPBACK: ret = nic_config_loopback(nic, &mbx.lbk); break; + case NIC_MBOX_MSG_RESET_STAT_COUNTER: + ret = nic_reset_stat_counters(nic, vf, &mbx.reset_stat); + break; default: dev_err(&nic->pdev->dev, "Invalid msg from VF%d, msg 0x%x\n", vf, mbx.msg.msg); diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index ed2fe72..7d90856 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -479,6 +479,16 @@ void nicvf_config_vlan_stripping(struct nicvf *nic, netdev_features_t features) NIC_QSET_RQ_GEN_CFG, 0, rq_cfg); } +static void nicvf_reset_rcv_queue_stats(struct nicvf *nic) +{ + union nic_mbx mbx = {}; + + /* Reset all RXQ's stats */ + mbx.reset_stat.msg = NIC_MBOX_MSG_RESET_STAT_COUNTER; + mbx.reset_stat.rq_stat_mask = 0xFFFF; + nicvf_send_msg_to_pf(nic, &mbx); +} + /* Configures receive queue */ static void nicvf_rcv_queue_config(struct nicvf *nic, struct queue_set *qs, int qidx, bool enable) @@ -812,6 +822,11 @@ int nicvf_config_data_transfer(struct nicvf *nic, bool enable) nicvf_free_resources(nic); } + /* Reset RXQ's stats. + * SQ's stats will get reset automatically once SQ is reset. + */ + nicvf_reset_rcv_queue_stats(nic); + return 0; }