From patchwork Mon Dec 12 10:26:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arun Ramadoss X-Patchwork-Id: 13070918 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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0100C4332F for ; Mon, 12 Dec 2022 10:28:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231194AbiLLK2Q (ORCPT ); Mon, 12 Dec 2022 05:28:16 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231411AbiLLK1k (ORCPT ); Mon, 12 Dec 2022 05:27:40 -0500 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0D199F007; Mon, 12 Dec 2022 02:27:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1670840856; x=1702376856; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4Rf2dUVUWRFdYHuwbmTUWUPOitJzxN4qaf/xQoXemA0=; b=L+bX5RQUZgdcph9i8w715ko9ZxDAx8L8h3+4dHkZEtnbmndP0WxPOG+Q IcPk4gTda7iITQ0Pn/pcmnlj9qWJIeWvl+NPjsjruLPAU7VU+WFZ/rFjL pooeNyGdcNpcEQvBWzG68al5CgQzRlH99QYW623lJrIwyGtIhrw5dMSto DO7kSgJBrVWAAVmuzV59G87FF9x3IuYyH/akCJgtE2MqKzAhH27Sdmroq x1Zftgop/Wu6uy+MzAan57k34PXJ1MmICJobJbuT33hCnIZj0AigZwcX8 TNH9c8TpP3pjUDy3W9IKsjjPTa4WQhHv/w59GRqht00HLTNWPjHtVY3cT w==; X-IronPort-AV: E=Sophos;i="5.96,238,1665471600"; d="scan'208";a="187686611" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 12 Dec 2022 03:27:28 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.16; Mon, 12 Dec 2022 03:27:18 -0700 Received: from CHE-LT-I17769U.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.16 via Frontend Transport; Mon, 12 Dec 2022 03:27:12 -0700 From: Arun Ramadoss To: , CC: , , , , , , , , , , , , , Subject: [Patch net-next v4 02/13] net: dsa: microchip: ptp: Initial hardware time stamping support Date: Mon, 12 Dec 2022 15:56:28 +0530 Message-ID: <20221212102639.24415-3-arun.ramadoss@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20221212102639.24415-1-arun.ramadoss@microchip.com> References: <20221212102639.24415-1-arun.ramadoss@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Christian Eggers This patch adds the routine for get_ts_info, hwstamp_get, set. This enables the PTP support towards userspace applications such as linuxptp. Signed-off-by: Christian Eggers Co-developed-by: Arun Ramadoss Signed-off-by: Arun Ramadoss --- v1 -> v2 - Declared the ksz_hwtstamp_get/set to NULL as macro if ptp is not enabled - Removed mutex lock in hwtstamp_set() RFC v2 -> Patch v1 - moved tagger set and get function to separate patch - Removed unnecessary comments --- drivers/net/dsa/microchip/ksz_common.c | 3 + drivers/net/dsa/microchip/ksz_common.h | 3 + drivers/net/dsa/microchip/ksz_ptp.c | 101 +++++++++++++++++++++++++ drivers/net/dsa/microchip/ksz_ptp.h | 11 +++ 4 files changed, 118 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index a1282347fdc6..81da650b70fb 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2978,6 +2978,9 @@ static const struct dsa_switch_ops ksz_switch_ops = { .get_pause_stats = ksz_get_pause_stats, .port_change_mtu = ksz_change_mtu, .port_max_mtu = ksz_max_mtu, + .get_ts_info = ksz_get_ts_info, + .port_hwtstamp_get = ksz_hwtstamp_get, + .port_hwtstamp_set = ksz_hwtstamp_set, }; struct ksz_device *ksz_switch_alloc(struct device *base, void *priv) diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index 23ed7fa72a3c..a5ce7ec30ba2 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -102,6 +102,9 @@ struct ksz_port { struct ksz_device *ksz_dev; struct ksz_irq pirq; u8 num; +#if IS_ENABLED(CONFIG_NET_DSA_MICROCHIP_KSZ_PTP) + struct hwtstamp_config tstamp_config; +#endif }; struct ksz_device { diff --git a/drivers/net/dsa/microchip/ksz_ptp.c b/drivers/net/dsa/microchip/ksz_ptp.c index 2da9b2ec0c40..34cc6d92c4c8 100644 --- a/drivers/net/dsa/microchip/ksz_ptp.c +++ b/drivers/net/dsa/microchip/ksz_ptp.c @@ -24,6 +24,107 @@ #define KSZ_PTP_INC_NS 40 /* HW clock is incremented every 40 ns (by 40) */ #define KSZ_PTP_SUBNS_BITS 32 +/* The function is return back the capability of timestamping feature when + * requested through ethtool -T utility + */ +int ksz_get_ts_info(struct dsa_switch *ds, int port, struct ethtool_ts_info *ts) +{ + struct ksz_device *dev = ds->priv; + struct ksz_ptp_data *ptp_data; + + ptp_data = &dev->ptp_data; + + if (!ptp_data->clock) + return -ENODEV; + + ts->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE | + SOF_TIMESTAMPING_RX_HARDWARE | + SOF_TIMESTAMPING_RAW_HARDWARE; + + ts->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ONESTEP_P2P); + + ts->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | + BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) | + BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) | + BIT(HWTSTAMP_FILTER_PTP_V2_EVENT); + + ts->phc_index = ptp_clock_index(ptp_data->clock); + + return 0; +} + +int ksz_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr) +{ + struct ksz_device *dev = ds->priv; + struct hwtstamp_config *config; + struct ksz_port *prt; + + prt = &dev->ports[port]; + config = &prt->tstamp_config; + + return copy_to_user(ifr->ifr_data, config, sizeof(*config)) ? + -EFAULT : 0; +} + +static int ksz_set_hwtstamp_config(struct ksz_device *dev, + struct hwtstamp_config *config) +{ + if (config->flags) + return -EINVAL; + + switch (config->tx_type) { + case HWTSTAMP_TX_OFF: + case HWTSTAMP_TX_ONESTEP_P2P: + break; + default: + return -ERANGE; + } + + switch (config->rx_filter) { + case HWTSTAMP_FILTER_NONE: + break; + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; + break; + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT; + break; + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + config->rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; + break; + default: + config->rx_filter = HWTSTAMP_FILTER_NONE; + return -ERANGE; + } + + return 0; +} + +int ksz_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr) +{ + struct ksz_device *dev = ds->priv; + struct hwtstamp_config config; + struct ksz_port *prt; + int ret; + + prt = &dev->ports[port]; + + ret = copy_from_user(&config, ifr->ifr_data, sizeof(config)); + if (ret) + return ret; + + ret = ksz_set_hwtstamp_config(dev, &config); + if (ret) + return ret; + + memcpy(&prt->tstamp_config, &config, sizeof(config)); + + return copy_to_user(ifr->ifr_data, &config, sizeof(config)); +} + static int _ksz_ptp_gettime(struct ksz_device *dev, struct timespec64 *ts) { u32 nanoseconds; diff --git a/drivers/net/dsa/microchip/ksz_ptp.h b/drivers/net/dsa/microchip/ksz_ptp.h index 8930047da764..7bb3fde2dd14 100644 --- a/drivers/net/dsa/microchip/ksz_ptp.h +++ b/drivers/net/dsa/microchip/ksz_ptp.h @@ -23,6 +23,11 @@ int ksz_ptp_clock_register(struct dsa_switch *ds); void ksz_ptp_clock_unregister(struct dsa_switch *ds); +int ksz_get_ts_info(struct dsa_switch *ds, int port, + struct ethtool_ts_info *ts); +int ksz_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr); +int ksz_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr); + #else struct ksz_ptp_data { @@ -37,6 +42,12 @@ static inline int ksz_ptp_clock_register(struct dsa_switch *ds) static inline void ksz_ptp_clock_unregister(struct dsa_switch *ds) { } +#define ksz_get_ts_info NULL + +#define ksz_hwtstamp_get NULL + +#define ksz_hwtstamp_set NULL + #endif /* End of CONFIG_NET_DSA_MICROCHIP_KSZ_PTP */ #endif