From patchwork Sun Mar 21 12:09:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hariprasad Kelam X-Patchwork-Id: 406578 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 5D316C433E5 for ; Sun, 21 Mar 2021 12:11:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CD9861931 for ; Sun, 21 Mar 2021 12:11:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230035AbhCUMKj (ORCPT ); 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Sun, 21 Mar 2021 05:10:11 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 21 Mar 2021 05:10:10 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sun, 21 Mar 2021 05:10:09 -0700 Received: from hyd1soter3.marvell.com (unknown [10.29.37.12]) by maili.marvell.com (Postfix) with ESMTP id 10B3F3F704D; Sun, 21 Mar 2021 05:10:06 -0700 (PDT) From: Hariprasad Kelam To: , CC: , , , , , , , Subject: [net-next PATCH 2/8] octeontx2-pf: Add ethtool priv flag to control PAM4 on/off Date: Sun, 21 Mar 2021 17:39:52 +0530 Message-ID: <20210321120958.17531-3-hkelam@marvell.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210321120958.17531-1-hkelam@marvell.com> References: <20210321120958.17531-1-hkelam@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-03-21_01:2021-03-19,2021-03-21 signatures=0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Felix Manlunas For PHYs that support changing modulation type (NRZ or PAM4), enable these commands: ethtool --set-priv-flags ethX pam4 on ethtool --set-priv-flags ethX pam4 off # means NRZ modulation ethtool --show-priv-flags ethX Signed-off-by: Felix Manlunas Signed-off-by: Hariprasad Kelam Signed-off-by: Sunil Goutham --- .../marvell/octeontx2/nic/otx2_ethtool.c | 62 +++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c index f4962a97a07..552ecae1dbe 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c @@ -22,6 +22,11 @@ #define DRV_NAME "octeontx2-nicpf" #define DRV_VF_NAME "octeontx2-nicvf" +static const char otx2_priv_flags_strings[][ETH_GSTRING_LEN] = { +#define OTX2_PRIV_FLAGS_PAM4 BIT(0) + "pam4", +}; + struct otx2_stat { char name[ETH_GSTRING_LEN]; unsigned int index; @@ -112,6 +117,12 @@ static void otx2_get_strings(struct net_device *netdev, u32 sset, u8 *data) struct otx2_nic *pfvf = netdev_priv(netdev); int stats; + if (sset == ETH_SS_PRIV_FLAGS) { + memcpy(data, otx2_priv_flags_strings, + ARRAY_SIZE(otx2_priv_flags_strings) * ETH_GSTRING_LEN); + return; + } + if (sset != ETH_SS_STATS) return; @@ -250,6 +261,9 @@ static int otx2_get_sset_count(struct net_device *netdev, int sset) struct otx2_nic *pfvf = netdev_priv(netdev); int qstats_count; + if (sset == ETH_SS_PRIV_FLAGS) + return ARRAY_SIZE(otx2_priv_flags_strings); + if (sset != ETH_SS_STATS) return -EINVAL; @@ -1219,6 +1233,52 @@ static int otx2_set_link_ksettings(struct net_device *netdev, return err; } +static int otx2_set_priv_flags(struct net_device *netdev, u32 priv_flags) +{ + struct otx2_nic *pfvf = netdev_priv(netdev); + struct cgx_phy_mod_type *req; + struct cgx_fw_data *fwd; + int rc = -ENOMEM; + + fwd = otx2_get_fwdata(pfvf); + if (IS_ERR(fwd)) + return PTR_ERR(fwd); + + /* ret here if phy does not support this feature */ + if (!fwd->fwdata.phy.misc.can_change_mod_type) + return -EOPNOTSUPP; + + mutex_lock(&pfvf->mbox.lock); + req = otx2_mbox_alloc_msg_cgx_set_phy_mod_type(&pfvf->mbox); + if (!req) + goto end; + + req->mod = priv_flags & OTX2_PRIV_FLAGS_PAM4; + if (!otx2_sync_mbox_msg(&pfvf->mbox)) + rc = 0; + +end: + mutex_unlock(&pfvf->mbox.lock); + return rc; +} + +static u32 otx2_get_priv_flags(struct net_device *netdev) +{ + struct otx2_nic *pfvf = netdev_priv(netdev); + struct cgx_fw_data *rsp; + u32 priv_flags = 0; + + rsp = otx2_get_fwdata(pfvf); + + if (IS_ERR(rsp)) + return 0; + + if (rsp->fwdata.phy.misc.mod_type) + priv_flags |= OTX2_PRIV_FLAGS_PAM4; + + return priv_flags; +} + static const struct ethtool_ops otx2_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | ETHTOOL_COALESCE_MAX_FRAMES, @@ -1250,6 +1310,8 @@ static const struct ethtool_ops otx2_ethtool_ops = { .set_fecparam = otx2_set_fecparam, .get_link_ksettings = otx2_get_link_ksettings, .set_link_ksettings = otx2_set_link_ksettings, + .set_priv_flags = otx2_set_priv_flags, + .get_priv_flags = otx2_get_priv_flags, }; void otx2_set_ethtool_ops(struct net_device *netdev)