From patchwork Thu Sep 23 14:08:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12513063 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 23F7DC433F5 for ; Thu, 23 Sep 2021 14:09:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1019861090 for ; Thu, 23 Sep 2021 14:09:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241689AbhIWOK7 (ORCPT ); Thu, 23 Sep 2021 10:10:59 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:61965 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S241667AbhIWOKt (ORCPT ); Thu, 23 Sep 2021 10:10:49 -0400 X-IronPort-AV: E=Sophos;i="5.85,316,1624287600"; d="scan'208";a="94816130" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 23 Sep 2021 23:09:16 +0900 Received: from localhost.localdomain (unknown [10.226.92.2]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id D558D437F0B8; Thu, 23 Sep 2021 23:09:13 +0900 (JST) From: Biju Das To: "David S. Miller" , Jakub Kicinski Cc: Biju Das , Sergey Shtylyov , Lad Prabhakar , Andrew Lunn , Sergei Shtylyov , Geert Uytterhoeven , Adam Ford , Yoshihiro Shimoda , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Chris Paterson , Biju Das Subject: [RFC/PATCH 17/18] ravb: Add carrier_counters to struct ravb_hw_info Date: Thu, 23 Sep 2021 15:08:12 +0100 Message-Id: <20210923140813.13541-18-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210923140813.13541-1-biju.das.jz@bp.renesas.com> References: <20210923140813.13541-1-biju.das.jz@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC RZ/G2L E-MAC supports carrier counters. Add a carrier_counter hw feature bit to struct ravb_hw_info to add this feature only for RZ/G2L. Signed-off-by: Biju Das Reviewed-by: Sergey Shtylyov --- drivers/net/ethernet/renesas/ravb.h | 5 +++++ drivers/net/ethernet/renesas/ravb_main.c | 13 +++++++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 85260f89e1cd..d42e8ea981df 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -198,11 +198,15 @@ enum ravb_reg { MAHR = 0x05c0, MALR = 0x05c8, TROCR = 0x0700, /* R-Car Gen3 and RZ/G2L only */ + CXR41 = 0x0708, /* Documented for RZ/G2L only */ + CXR42 = 0x0710, /* Documented for RZ/G2L only */ CEFCR = 0x0740, FRECR = 0x0748, TSFRCR = 0x0750, TLFRCR = 0x0758, RFCR = 0x0760, + CXR55 = 0x0768, /* Documented for RZ/G2L only */ + CXR56 = 0x0770, /* Documented for RZ/G2L only */ MAFCR = 0x0778, CSR0 = 0x0800, /* Documented for RZ/G2L only */ }; @@ -1036,6 +1040,7 @@ struct ravb_hw_info { unsigned half_duplex:1; /* E-MAC supports half duplex mode */ unsigned rx_2k_buffers:1; /* AVB-DMAC has Max 2K buf size on RX */ unsigned timestamp:1; /* AVB-DMAC has timestamp */ + unsigned carrier_counters:1; /* E-MAC has carrier counters */ }; struct ravb_private { diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 867e180e6655..72aea5875bc5 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -2060,6 +2060,18 @@ static struct net_device_stats *ravb_get_stats(struct net_device *ndev) ravb_write(ndev, 0, TROCR); /* (write clear) */ } + if (info->carrier_counters) { + nstats->collisions += ravb_read(ndev, CXR41); + ravb_write(ndev, 0, CXR41); /* (write clear) */ + nstats->tx_carrier_errors += ravb_read(ndev, CXR42); + ravb_write(ndev, 0, CXR42); /* (write clear) */ + + nstats->tx_carrier_errors += ravb_read(ndev, CXR55); + ravb_write(ndev, 0, CXR55); /* (write clear) */ + nstats->tx_carrier_errors += ravb_read(ndev, CXR56); + ravb_write(ndev, 0, CXR56); /* (write clear) */ + } + nstats->rx_packets = stats0->rx_packets + stats1->rx_packets; nstats->tx_packets = stats0->tx_packets + stats1->tx_packets; nstats->rx_bytes = stats0->rx_bytes + stats1->rx_bytes; @@ -2425,6 +2437,7 @@ static const struct ravb_hw_info rgeth_hw_info = { .no_gptp = 1, .mii_rgmii_selection = 1, .half_duplex = 1, + .carrier_counters = 1, }; static const struct of_device_id ravb_match_table[] = {