From nobody Tue Nov 26 00:58:24 2024 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 025441FF020; Wed, 23 Oct 2024 22:02:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.154.123 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729720963; cv=none; b=S84TVr9TT8cMMijG+szWbWA8+TIgxGiPraVOh1PdkrTlovgGFWB5kwPdWhRrUGuqWFglU2dwx/STsBFZ+5qUWbxnCvn1YVYrKR9efKcieQ1N7WUVfb81hOTAklmTvA981xF4xDkzgUPPO2a57Lds4isWyTPaBDaRYJnIvsi3K3k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729720963; c=relaxed/simple; bh=ZKiUv9DzB/srjyB0nOslYiyXDW2kxgFTeso+UmXKlj8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=Fu0JR5HNs0raAPLwdLmoyQkXZQ7SEBLJ4N6QsHiFvtk0t3vIuhgIbBQa99qw+vDR3ErCt4Q/bLHmEW8f6c8wT5uWtk8MdeDuOdVy7x+M+ezduP6c3PRX1lHrrRkyhQJ5bCcpUCKPwklTnGHV33+KvWoWHf4fUiekJvxpWiOmrMY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=LoJFQDF7; arc=none smtp.client-ip=68.232.154.123 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="LoJFQDF7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1729720960; x=1761256960; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=ZKiUv9DzB/srjyB0nOslYiyXDW2kxgFTeso+UmXKlj8=; b=LoJFQDF7mTl2e9138jMztJaKgeN4S22O7CJ8/cql+sldHc+PALKm1PBv bgBD6e44NBY0+1vh5VACM6Aj/zjtfu+TZvVOHTl4OLifiwnTr4Wr3HV0t 8cUUO6SUQt9FLW2bimjHmwAZ7ONnQQX0evh+7qnzg8wZSOTcQe9hkcN58 9QcsHd0R8gSn/OJR3IMsabsSmiA5rYqE4tAO0fN7GAPoCiDiZjVWYRpTA zw8MzR5YJse2pY/5lgkaBg40F//rQpKDjQpQQ8s8JRLKXbyiYcLXDNswP ymmzu3xBrovet0gjREHIIei9sUxVMFj8hkOmQeFMR54VobysxIburD5eh g==; X-CSE-ConnectionGUID: wd8IJW4NTJ64cR86gqDN2Q== X-CSE-MsgGUID: vbpVIdD/Q2+PXaOWlN1TYg== X-IronPort-AV: E=Sophos;i="6.11,227,1725346800"; d="scan'208";a="200831272" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa6.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 23 Oct 2024 15:02:37 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Wed, 23 Oct 2024 15:02:21 -0700 Received: from DEN-DL-M70577.microchip.com (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Wed, 23 Oct 2024 15:02:17 -0700 From: Daniel Machon Date: Thu, 24 Oct 2024 00:01:29 +0200 Subject: [PATCH net-next v2 10/15] net: lan969x: add PTP handler function Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20241024-sparx5-lan969x-switch-driver-2-v2-10-a0b5fae88a0f@microchip.com> References: <20241024-sparx5-lan969x-switch-driver-2-v2-0-a0b5fae88a0f@microchip.com> In-Reply-To: <20241024-sparx5-lan969x-switch-driver-2-v2-0-a0b5fae88a0f@microchip.com> To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Lars Povlsen , Steen Hegelund , , , , , , Richard Cochran , Rob Herring , Krzysztof Kozlowski , Conor Dooley , , , , CC: , , , Steen Hegelund , X-Mailer: b4 0.14-dev Add PTP IRQ handler for lan969x. This is required, as the PTP registers are placed in two different targets on Sparx5 and lan969x. The implementation is otherwise the same as on Sparx5. Also, expose sparx5_get_hwtimestamp() for use by lan969x. Reviewed-by: Steen Hegelund Signed-off-by: Daniel Machon --- drivers/net/ethernet/microchip/lan969x/lan969x.c | 90 ++++++++++++++++++= ++++ .../net/ethernet/microchip/sparx5/sparx5_main.h | 5 ++ drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c | 9 +-- 3 files changed, 99 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/microchip/lan969x/lan969x.c b/drivers/net= /ethernet/microchip/lan969x/lan969x.c index 2c2b86f9144e..a3b40e09b947 100644 --- a/drivers/net/ethernet/microchip/lan969x/lan969x.c +++ b/drivers/net/ethernet/microchip/lan969x/lan969x.c @@ -201,6 +201,95 @@ static int lan969x_port_mux_set(struct sparx5 *sparx5,= struct sparx5_port *port, return 0; } =20 +static irqreturn_t lan969x_ptp_irq_handler(int irq, void *args) +{ + int budget =3D SPARX5_MAX_PTP_ID; + struct sparx5 *sparx5 =3D args; + + while (budget--) { + struct sk_buff *skb, *skb_tmp, *skb_match =3D NULL; + struct skb_shared_hwtstamps shhwtstamps; + struct sparx5_port *port; + struct timespec64 ts; + unsigned long flags; + u32 val, id, txport; + u32 delay; + + val =3D spx5_rd(sparx5, PTP_TWOSTEP_CTRL); + + /* Check if a timestamp can be retrieved */ + if (!(val & PTP_TWOSTEP_CTRL_PTP_VLD)) + break; + + WARN_ON(val & PTP_TWOSTEP_CTRL_PTP_OVFL); + + if (!(val & PTP_TWOSTEP_CTRL_STAMP_TX)) + continue; + + /* Retrieve the ts Tx port */ + txport =3D PTP_TWOSTEP_CTRL_STAMP_PORT_GET(val); + + /* Retrieve its associated skb */ + port =3D sparx5->ports[txport]; + + /* Retrieve the delay */ + delay =3D spx5_rd(sparx5, PTP_TWOSTEP_STAMP_NSEC); + delay =3D PTP_TWOSTEP_STAMP_NSEC_NS_GET(delay); + + /* Get next timestamp from fifo, which needs to be the + * rx timestamp which represents the id of the frame + */ + spx5_rmw(PTP_TWOSTEP_CTRL_PTP_NXT_SET(1), + PTP_TWOSTEP_CTRL_PTP_NXT, + sparx5, PTP_TWOSTEP_CTRL); + + val =3D spx5_rd(sparx5, PTP_TWOSTEP_CTRL); + + /* Check if a timestamp can be retrieved */ + if (!(val & PTP_TWOSTEP_CTRL_PTP_VLD)) + break; + + /* Read RX timestamping to get the ID */ + id =3D spx5_rd(sparx5, PTP_TWOSTEP_STAMP_NSEC); + id <<=3D 8; + id |=3D spx5_rd(sparx5, PTP_TWOSTEP_STAMP_SUBNS); + + spin_lock_irqsave(&port->tx_skbs.lock, flags); + skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) { + if (SPARX5_SKB_CB(skb)->ts_id !=3D id) + continue; + + __skb_unlink(skb, &port->tx_skbs); + skb_match =3D skb; + break; + } + spin_unlock_irqrestore(&port->tx_skbs.lock, flags); + + /* Next ts */ + spx5_rmw(PTP_TWOSTEP_CTRL_PTP_NXT_SET(1), + PTP_TWOSTEP_CTRL_PTP_NXT, + sparx5, PTP_TWOSTEP_CTRL); + + if (WARN_ON(!skb_match)) + continue; + + spin_lock(&sparx5->ptp_ts_id_lock); + sparx5->ptp_skbs--; + spin_unlock(&sparx5->ptp_ts_id_lock); + + /* Get the h/w timestamp */ + sparx5_get_hwtimestamp(sparx5, &ts, delay); + + /* Set the timestamp in the skb */ + shhwtstamps.hwtstamp =3D ktime_set(ts.tv_sec, ts.tv_nsec); + skb_tstamp_tx(skb_match, &shhwtstamps); + + dev_kfree_skb_any(skb_match); + } + + return IRQ_HANDLED; +} + static const struct sparx5_regs lan969x_regs =3D { .tsize =3D lan969x_tsize, .gaddr =3D lan969x_gaddr, @@ -242,6 +331,7 @@ static const struct sparx5_ops lan969x_ops =3D { .get_hsch_max_group_rate =3D &lan969x_get_hsch_max_group_rate, .get_sdlb_group =3D &lan969x_get_sdlb_group, .set_port_mux =3D &lan969x_port_mux_set, + .ptp_irq_handler =3D &lan969x_ptp_irq_handler, }; =20 const struct sparx5_match_data lan969x_desc =3D { diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/= net/ethernet/microchip/sparx5/sparx5_main.h index 15f5d38776c4..3f66045c57ef 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -114,6 +114,8 @@ enum sparx5_vlan_port_type { #define SPX5_DSM_CAL_LEN 64 #define SPX5_DSM_CAL_MAX_DEVS_PER_TAXI 13 =20 +#define SPARX5_MAX_PTP_ID 512 + struct sparx5; =20 struct sparx5_calendar_data { @@ -499,6 +501,9 @@ void sparx5_ptp_txtstamp_release(struct sparx5_port *po= rt, struct sk_buff *skb); irqreturn_t sparx5_ptp_irq_handler(int irq, void *args); int sparx5_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts= ); +void sparx5_get_hwtimestamp(struct sparx5 *sparx5, + struct timespec64 *ts, + u32 nsec); =20 /* sparx5_vcap_impl.c */ int sparx5_vcap_init(struct sparx5 *sparx5); diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c b/drivers/n= et/ethernet/microchip/sparx5/sparx5_ptp.c index a511f14312f1..1c2903700a9c 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c @@ -11,8 +11,6 @@ #include "sparx5_main_regs.h" #include "sparx5_main.h" =20 -#define SPARX5_MAX_PTP_ID 512 - #define TOD_ACC_PIN 0x4 =20 enum { @@ -275,9 +273,9 @@ void sparx5_ptp_txtstamp_release(struct sparx5_port *po= rt, spin_unlock_irqrestore(&sparx5->ptp_ts_id_lock, flags); } =20 -static void sparx5_get_hwtimestamp(struct sparx5 *sparx5, - struct timespec64 *ts, - u32 nsec) +void sparx5_get_hwtimestamp(struct sparx5 *sparx5, + struct timespec64 *ts, + u32 nsec) { /* Read current PTP time to get seconds */ const struct sparx5_consts *consts =3D sparx5->data->consts; @@ -305,6 +303,7 @@ static void sparx5_get_hwtimestamp(struct sparx5 *sparx= 5, =20 spin_unlock_irqrestore(&sparx5->ptp_clock_lock, flags); } +EXPORT_SYMBOL_GPL(sparx5_get_hwtimestamp); =20 irqreturn_t sparx5_ptp_irq_handler(int irq, void *args) { --=20 2.34.1