From patchwork Wed Oct 16 07:36:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ioana Ciornei X-Patchwork-Id: 1177640 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nxp.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 46tPHn0PSpz9sP7 for ; Wed, 16 Oct 2019 18:36:37 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391102AbfJPHgg (ORCPT ); Wed, 16 Oct 2019 03:36:36 -0400 Received: from inva021.nxp.com ([92.121.34.21]:55900 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391056AbfJPHgf (ORCPT ); Wed, 16 Oct 2019 03:36:35 -0400 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 6EA542004E2; Wed, 16 Oct 2019 09:36:33 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 610592004D7; Wed, 16 Oct 2019 09:36:33 +0200 (CEST) Received: from fsr-ub1464-137.ea.freescale.net (fsr-ub1464-137.ea.freescale.net [10.171.82.114]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 10F9C205D2; Wed, 16 Oct 2019 09:36:33 +0200 (CEST) From: Ioana Ciornei To: davem@davemloft.net, jakub.kicinski@netronome.com, andrew@lunn.ch Cc: netdev@vger.kernel.org, Ioana Radulescu , Ioana Ciornei Subject: [PATCH v3 net 2/2] dpaa2-eth: Fix TX FQID values Date: Wed, 16 Oct 2019 10:36:23 +0300 Message-Id: <1571211383-5759-3-git-send-email-ioana.ciornei@nxp.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1571211383-5759-1-git-send-email-ioana.ciornei@nxp.com> References: <1571211383-5759-1-git-send-email-ioana.ciornei@nxp.com> Reply-to: ioana.ciornei@nxp.com X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ioana Radulescu Depending on when MC connects the DPNI to a MAC, Tx FQIDs may not be available during probe time. Read the FQIDs each time the link goes up to avoid using invalid values. In case an error occurs or an invalid value is retrieved, fall back to QDID-based enqueueing. Fixes: 1fa0f68c9255 ("dpaa2-eth: Use FQ-based DPIO enqueue API") Signed-off-by: Ioana Radulescu Signed-off-by: Ioana Ciornei --- Changes in v2: - used reverse christmas tree ordering in update_tx_fqids Changes in v3: - add a missing new line - go back to FQ based enqueueing after a transient error drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 44 ++++++++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c index 5acd734a216b..19379bae0144 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -1235,6 +1235,8 @@ static void dpaa2_eth_set_rx_taildrop(struct dpaa2_eth_priv *priv, bool enable) priv->rx_td_enabled = enable; } +static void update_tx_fqids(struct dpaa2_eth_priv *priv); + static int link_state_update(struct dpaa2_eth_priv *priv) { struct dpni_link_state state = {0}; @@ -1261,6 +1263,7 @@ static int link_state_update(struct dpaa2_eth_priv *priv) goto out; if (state.up) { + update_tx_fqids(priv); netif_carrier_on(priv->net_dev); netif_tx_start_all_queues(priv->net_dev); } else { @@ -2533,6 +2536,47 @@ static int set_pause(struct dpaa2_eth_priv *priv) return 0; } +static void update_tx_fqids(struct dpaa2_eth_priv *priv) +{ + struct dpni_queue_id qid = {0}; + struct dpaa2_eth_fq *fq; + struct dpni_queue queue; + int i, j, err; + + /* We only use Tx FQIDs for FQID-based enqueue, so check + * if DPNI version supports it before updating FQIDs + */ + if (dpaa2_eth_cmp_dpni_ver(priv, DPNI_ENQUEUE_FQID_VER_MAJOR, + DPNI_ENQUEUE_FQID_VER_MINOR) < 0) + return; + + for (i = 0; i < priv->num_fqs; i++) { + fq = &priv->fq[i]; + if (fq->type != DPAA2_TX_CONF_FQ) + continue; + for (j = 0; j < dpaa2_eth_tc_count(priv); j++) { + err = dpni_get_queue(priv->mc_io, 0, priv->mc_token, + DPNI_QUEUE_TX, j, fq->flowid, + &queue, &qid); + if (err) + goto out_err; + + fq->tx_fqid[j] = qid.fqid; + if (fq->tx_fqid[j] == 0) + goto out_err; + } + } + + priv->enqueue = dpaa2_eth_enqueue_fq; + + return; + +out_err: + netdev_info(priv->net_dev, + "Error reading Tx FQID, fallback to QDID-based enqueue\n"); + priv->enqueue = dpaa2_eth_enqueue_qd; +} + /* Configure the DPNI object this interface is associated with */ static int setup_dpni(struct fsl_mc_device *ls_dev) {