Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966710AbeAONhG (ORCPT + 1 other); Mon, 15 Jan 2018 08:37:06 -0500 Received: from mail-by2nam03on0080.outbound.protection.outlook.com ([104.47.42.80]:37568 "EHLO NAM03-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S933322AbeAOMpj (ORCPT ); Mon, 15 Jan 2018 07:45:39 -0500 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Aleksey.Makarov@cavium.com; From: Aleksey Makarov To: netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Goutham, Sunil" , Radoslaw Biernacki , Aleksey Makarov , Robert Richter , David Daney , Richard Cochran , Philippe Ombredanne , Joe Perches , Sunil Goutham Subject: [PATCH net-next v6 2/2] net: thunderx: add timestamping support Date: Mon, 15 Jan 2018 18:44:57 +0600 Message-Id: <20180115124500.14872-3-aleksey.makarov@cavium.com> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180115124500.14872-1-aleksey.makarov@cavium.com> References: <20180115124500.14872-1-aleksey.makarov@cavium.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [5.45.71.246] X-ClientProxiedBy: AM5P189CA0003.EURP189.PROD.OUTLOOK.COM (10.161.53.16) To BN3PR07MB2481.namprd07.prod.outlook.com (10.167.4.22) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: bb495f30-f16f-46c4-cc6e-08d55c15e0d7 X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(5600026)(4604075)(4534125)(4602075)(4627221)(201703031133081)(201702281549075)(2017052603307)(7153060)(7193020);SRVR:BN3PR07MB2481; X-Microsoft-Exchange-Diagnostics: 1;BN3PR07MB2481;3:rhC2D/0TfSN/s2smQbQ1P+UFm1X6GorNxXjpQ4K5Z40mtQmZH7s/GC4EqQlI3erz7fm3lQSxsMOXifV7dGOuCpPbZAA+lFn+IRJRB2VvymCXSQXMkcpFUrXXoP4DMpTKd/DHr4natn+4LRBfprgy2kweiW1ev4MKNRv8vV1jOSLYLea6hYSR+kX8WBy+4CdsYnjKUJKzsTFLA/QhfGLdJ+OJzpoQrMBmtY5G3pu+c1Lay4KhE8yhpFYVB/c6fn74;25:GOdTxWFoIGjj3C+8RD8zzEzxaaO+tofkuMkRQ9TyVem4lYShNJ7GvVFa1hXd+pPTufMWIFRlPgLF476a6JZujRpb5KywJTx6pDQUMlZfMlycsAGsluCy6QBNTAv6Rc5COfTBPIMEocUmdNbmXPDJ7+NR1FrBaq/6znp7CSB2WzfPgEHHf1Wsn+d5mzqtoK3xCF30T/vTlnilR9+h/SP0amLJO0PmmfKT2uSHRQ7Z6iuwXYdeKB2MnjQ4y1/JaWt5K2dhXntYPZ6YcsPa5DUc4xsAc/9ovUGVEUYrIT1MpXTFpF2Jcz/jD7TIGxMNYcgQwxDg74ROyTjX679hlSMZ+Q==;31:HInXvNGorsxUHtPhSiCmhtWGe7SHvPpX4Dx7t8RXw0lmlvmZnt+c7F6Cxq+GqRwuciTZ2ZXxrdYYTZ5DjxaeR55L3jWP0OEYuLtmUl+vLX0wy7oEdCIVFZ8WB/oejoi9D3XLvLMM18hoR3Dca7UCwpHmZwpttO4Ntt8dNGwaCaP3mlW5Nl9E3X3y+aQdNV9Ol5EFkhD6zO3gQc/2Tv7DWx2tsKWjONIIouzpLzLQ5Sg= X-MS-TrafficTypeDiagnostic: BN3PR07MB2481: X-Microsoft-Exchange-Diagnostics: 1;BN3PR07MB2481;20:/+PePi8pnR2lcDmnXy+IY/9mno2cRUWuimja6sgnmukn3Xw9x0N43M1cqhTpBzZqyGrJt5Caw0UlBztm9nx1bqEcg4AdLdevrAx+miSy2UPc11eemLI/Pg72sAGQrWUJAb+yhrkXczmKTg98Upakc+YwOIVijnN9tf80VNBvlyJsF4X02frzaGumswDnA7bSDmT2HeSpc/f1CQrUPJS/sasfKCKGTwEXnhbbRFVcKXkjnCyq86CixLjZCyGFiuvCCiw26nOT5vnSgbFR9b+7cWugJi8jIii7yzTwgbGy0fgt0p2/6qjl9kH6t2Eer5/RYgGkAStfVXaG0rei70OyqHBhVXy9ha+CQDjCH6ObMPRWkLxthmS6BJF++2j10xzB5ghIvqR9yEAjwBB+FyVBAopYqTdApgZlYlkBcFlRZD1f+ZmyzwCyOsBwqC15SpCL0JKk5G9ltXbGWEkJwpstF60XrX1LOOUjwvaIFXamwbGqJWrb/qTvOYL80m6/KowY;4:O9sQ7Cujwzixz+dzIPcMsmDugtkM25/dX3yzwK4BtdU88ytFuyJYMTp/wjOB0HHb4mOEXhD2ohDCWvCrZ/IPGaUQGpco1RHe5FLBuWh48hbctxWgbbgUllBYlPeNEXGtV9LBrCTfjLg/0IFQrmb4W8lu7rQhnDDFK7stXcmIek1Uk6w9wvSN0yd3ijEmfJsp2MctpmrxUSWH/+U4YGnDg6u3tX4C7RDRoDm03CWyUdrbIrIW+TuXxJ1gPN0WRhKyStPfVVgdqksSE14hPD28TQ== X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(6040470)(2401047)(8121501046)(5005006)(3002001)(3231023)(944501161)(10201501046)(93006095)(93001095)(6041268)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(20161123562045)(20161123558120)(6072148)(201708071742011);SRVR:BN3PR07MB2481;BCL:0;PCL:0;RULEID:(100000803101)(100110400095);SRVR:BN3PR07MB2481; X-Forefront-PRVS: 0553CBB77A X-Forefront-Antispam-Report: SFV:NSPM;SFS:(10009020)(6069001)(366004)(39380400002)(39850400004)(396003)(376002)(346002)(189003)(199004)(3846002)(6116002)(81156014)(81166006)(8936002)(50226002)(1076002)(47776003)(478600001)(66066001)(72206003)(68736007)(8676002)(2906002)(7736002)(305945005)(2361001)(2351001)(37156001)(105586002)(106356001)(71446004)(50466002)(48376002)(36756003)(51416003)(16526018)(6512007)(16586007)(54906003)(5660300001)(575784001)(86362001)(39060400002)(316002)(4326008)(53936002)(6486002)(76176011)(107886003)(59450400001)(25786009)(97736004)(2950100002)(6666003)(6506007)(6916009)(386003)(52116002);DIR:OUT;SFP:1101;SCL:1;SRVR:BN3PR07MB2481;H:localhost.localdomain;FPR:;SPF:None;PTR:InfoNoRecords;MX:1;A:1;LANG:en; X-Microsoft-Exchange-Diagnostics: =?us-ascii?Q?1;BN3PR07MB2481;23:V2JCkFCDU9LUIW/mhsP3qFBR1Ah06FNCEsKN9DEzc?= =?us-ascii?Q?usFsE1e43gQi2NI4fuD3KZ6poQNlyUZ2ITVEYf6SOlqw02wiP6EvwM3j6F/8?= =?us-ascii?Q?kkdxTm6hFAoXF/SuY+L33qCN4UbC9t+EYuFwU12PhuDI42QeJHG+dsdC7qB9?= =?us-ascii?Q?1uhuRfSsHyKZJfDPVIdt3dL0pVeMrUDjS1BbAJhdJ6lJU4CxbpmLkh4cTQNK?= =?us-ascii?Q?L6JeLccIoGaunxmqkU1J5SeDwY8N0A9IrFg9CkDv0sGXzxQmi4Q4tAzq2axS?= =?us-ascii?Q?NuZJtFBttE82QAGaZ20dV/SR9L9FINM8L3OjRcUl8gA0u+V3qi4YdGjflaJ+?= =?us-ascii?Q?B+6buiQqjyCSAztoHqiyo+YlDWwc2rj2s9dkoCVR8wtvQpaB1gD2RrjFbzpb?= =?us-ascii?Q?RmKu84vLRvbZLHNfpExPZ/iP1dJ+D7ev3/rR+CxSjlt8CWqtJ4fu13uIcGmp?= =?us-ascii?Q?jJ8fbYxLsKhXHcDB9tsAmO8PZgcL3fU8WPtM1o+A/CCGeYLacen8ZBxr3V7C?= =?us-ascii?Q?aw1F/j8Z9ret8zq/EOrCwj1+aIQ+7v3PJLAGMgCM1Dl+LInYGoK1SKFwv0+l?= =?us-ascii?Q?cMTkJR1eHImW+1UMuJKkI/XmGPjEwfhkU8YArHoqzkDEJfys7DxaHRYrcTSQ?= =?us-ascii?Q?Trln+dw55t0Mveuz/0jkOk3qnGrfa11+LqLZ4EyP0q2VBw6R33TTa1HJLpOY?= =?us-ascii?Q?1NwyZtuLTZqW7dVneb+SQR4ByN2qkgpIFVlhQO1mZofD0LH5MGWXZ1+E1n7N?= =?us-ascii?Q?9ndWE0phc+28bGYr6LQPFBnF8HwYK7RtVZYefmJHDs0K96+Itp2Hxi3Ibkvh?= =?us-ascii?Q?Yyc6umo49dtZ9YCOYOsb4c2Dd7xHFac9f0mLEcd05v5lLVVqi+sSfeUOhmTS?= =?us-ascii?Q?sLFfZtu2X+HogH3arrySg2Y8tv5EWm+nOkthkp+8Mq58HHaV+Qynyh7LLnJ/?= =?us-ascii?Q?Pt5wJRwE+HMRWyuiRkOjQC7wgDnGFpPU9t5b3vCy8dVJIFBka+fB8OnjUqGd?= =?us-ascii?Q?KMW95JX0IXbPt7fuoWuXs6lpp2nOindAvrLBmQ+62tH6+iCsGaFhY8q8oHL6?= =?us-ascii?Q?YG95YK0qPn9th2lIbAIJm07hcFvOHbZIlTIElz4P1sUMor6BnUs95k+O9dQk?= =?us-ascii?Q?2mzR3yjCpI9SELQvYfVXsbwn85nKrqYwrKjNzUV5RI5Q+cbSvNHcloIURwCu?= =?us-ascii?Q?nRY6KcjRqrNZD8mviyIzSieuZ5csSAKPTDUfO6W9j+WzZCzYfR5E0/JwbhIk?= =?us-ascii?Q?BadATiHdjUjP+ZzNyBdIEMDIMloaNg4ArGnCN0XgbsdYvj4w4vyk4viZfsDE?= =?us-ascii?Q?CfIEWJIyS9Xuy6RSbnLh9RullOL93Zfqqd4YAyzAVT2?= X-Microsoft-Exchange-Diagnostics: 1;BN3PR07MB2481;6:5+1TakSSQCvxa4/lFMHJe3mrVNCFgFk9jhsaAkJC+scUhdqGbXKLjQEePoiqDoHoLDseCU8GJ/HaHr4MTh4StaSMWie1SvdlhV+6nUsmD7/fMPloLD0ePhCji3k7o2UKkgfwlQshAtYugMVVwbGE3uw+Fgoc2aIX9wkcVLq4ZrL7uOs0TCabkfGEQ/osO2J1LNauTfDgBgLuzMWvChJnHvIM6gARsVgSc7nqJesAKP7vToageMkZfb5ZShfdmKwebn5RctNem3qJp61K2hObTjnQnlQlus1MDOxJEqoiKnCJI5xOORh8yyVkE9bEnEm6YwNu7eFlwkRfaYYVJyJ3TTruCL4fVkufLeb5lB9LiyM=;5:+QEJvZuHbjPkscaxbLsQ5BoFfp8rDFdY4IAr0yDLOuIzBIjqMXLyOTjCcYnsqPOSHgQ/yfKfw/nTxD+IjAM9w2szACL7XXIEXILNgRcfKATJGpCzH7DieOEnYbnWWbW4cB5QyhzNMSce7MEP3+PZM7tyejoaTbpyOcnNbiN2OEE=;24:splfVUKf2l1z9UMVaOAu0Ys/F45pTjmhhmI92OUWx4Y7vsRKtoLSiF286E1j83q6dp+60CSqXHGuhbuRey/Rweb43ctLoaWW5wuM9GgoS84=;7:9ncXbHTukEwLBhxNA0qe0GnGI0W9v5ABbpqvIVF9V5t18hwd2heXKz0ZpeuS2AVin5t6s8pAck0+aoTJfN5NsOJIG9BtKlIoltkCcb5k3g0alGZzluiQV974ZrjsOMzruvA0ij4riW+YUHSwBOpaN5ZZIVLbUBQ7r0anLtiqL2ft/LaI7RavuaVeoEvJ8EgQY3m2LHWYrIugoxbyTXWVITvhLFz9Ec0HE5g8sWM09XBEp4ocPZUfjZSY2YjxF/Ad SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-OriginatorOrg: cavium.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jan 2018 12:45:35.0976 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bb495f30-f16f-46c4-cc6e-08d55c15e0d7 X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 711e4ccf-2e9b-4bcf-a551-4094005b6194 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR07MB2481 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: From: Sunil Goutham This adds timestamping support for both receive and transmit paths. On the receive side no filters are supported i.e either all pkts will get a timestamp appended infront of the packet or none. On the transmit side HW doesn't support timestamp insertion but only generates a separate CQE with transmitted packet's timestamp. Also HW supports only one packet at a time for timestamping on the transmit side. Signed-off-by: Sunil Goutham Signed-off-by: Aleksey Makarov Acked-by: Philippe Ombredanne --- drivers/net/ethernet/cavium/Kconfig | 1 + drivers/net/ethernet/cavium/thunder/nic.h | 36 +++++ drivers/net/ethernet/cavium/thunder/nic_main.c | 56 ++++++- drivers/net/ethernet/cavium/thunder/nic_reg.h | 1 + .../net/ethernet/cavium/thunder/nicvf_ethtool.c | 29 +++- drivers/net/ethernet/cavium/thunder/nicvf_main.c | 169 ++++++++++++++++++++- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 26 ++++ drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 29 ++++ drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 4 + 9 files changed, 345 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/cavium/Kconfig b/drivers/net/ethernet/cavium/Kconfig index 96586c0b4490..043e3c11c42b 100644 --- a/drivers/net/ethernet/cavium/Kconfig +++ b/drivers/net/ethernet/cavium/Kconfig @@ -27,6 +27,7 @@ config THUNDER_NIC_PF config THUNDER_NIC_VF tristate "Thunder Virtual function driver" + imply CAVIUM_PTP depends on 64BIT ---help--- This driver supports Thunder's NIC virtual function diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h index 4a02e618e318..4cacce5d2b16 100644 --- a/drivers/net/ethernet/cavium/thunder/nic.h +++ b/drivers/net/ethernet/cavium/thunder/nic.h @@ -263,6 +263,8 @@ struct nicvf_drv_stats { struct u64_stats_sync syncp; }; +struct cavium_ptp; + struct nicvf { struct nicvf *pnicvf; struct net_device *netdev; @@ -312,6 +314,33 @@ struct nicvf { struct tasklet_struct qs_err_task; struct work_struct reset_task; + /* PTP timestamp */ + struct cavium_ptp *ptp_clock; + /* Inbound timestamping is on */ + bool hw_rx_tstamp; + /* When the packet that requires timestamping is sent, hardware inserts + * two entries to the completion queue. First is the regular + * CQE_TYPE_SEND entry that signals that the packet was sent. + * The second is CQE_TYPE_SEND_PTP that contains the actual timestamp + * for that packet. + * `ptp_skb` is initialized in the handler for the CQE_TYPE_SEND + * entry and is used and zeroed in the handler for the CQE_TYPE_SEND_PTP + * entry. + * So `ptp_skb` is used to hold the pointer to the packet between + * the calls to CQE_TYPE_SEND and CQE_TYPE_SEND_PTP handlers. + */ + struct sk_buff *ptp_skb; + /* `tx_ptp_skbs` is set when the hardware is sending a packet that + * requires timestamping. Cavium hardware can not process more than one + * such packet at once so this is set each time the driver submits + * a packet that requires timestamping to the send queue and clears + * each time it receives the entry on the completion queue saying + * that such packet was sent. + * So `tx_ptp_skbs` prevents driver from submitting more than one + * packet that requires timestamping to the hardware for transmitting. + */ + atomic_t tx_ptp_skbs; + /* Interrupt coalescing settings */ u32 cq_coalesce_usecs; u32 msg_enable; @@ -371,6 +400,7 @@ struct nicvf { #define NIC_MBOX_MSG_LOOPBACK 0x16 /* Set interface in loopback */ #define NIC_MBOX_MSG_RESET_STAT_COUNTER 0x17 /* Reset statistics counters */ #define NIC_MBOX_MSG_PFC 0x18 /* Pause frame control */ +#define NIC_MBOX_MSG_PTP_CFG 0x19 /* HW packet timestamp */ #define NIC_MBOX_MSG_CFG_DONE 0xF0 /* VF configuration done */ #define NIC_MBOX_MSG_SHUTDOWN 0xF1 /* VF is being shutdown */ @@ -521,6 +551,11 @@ struct pfc { u8 fc_tx; }; +struct set_ptp { + u8 msg; + bool enable; +}; + /* 128 bit shared memory between PF and each VF */ union nic_mbx { struct { u8 msg; } msg; @@ -540,6 +575,7 @@ union nic_mbx { struct set_loopback lbk; struct reset_stat_cfg reset_stat; struct pfc pfc; + struct set_ptp ptp; }; #define NIC_NODE_ID_MASK 0x03 diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index 8f1dd55b3e08..8325577d7442 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -426,13 +426,22 @@ static void nic_init_hw(struct nicpf *nic) /* Enable backpressure */ nic_reg_write(nic, NIC_PF_BP_CFG, (1ULL << 6) | 0x03); - /* TNS and TNS bypass modes are present only on 88xx */ + /* TNS and TNS bypass modes are present only on 88xx + * Also offset of this CSR has changed in 81xx and 83xx. + */ if (nic->pdev->subsystem_device == PCI_SUBSYS_DEVID_88XX_NIC_PF) { /* Disable TNS mode on both interfaces */ nic_reg_write(nic, NIC_PF_INTF_0_1_SEND_CFG, - (NIC_TNS_BYPASS_MODE << 7) | BGX0_BLOCK); + (NIC_TNS_BYPASS_MODE << 7) | + BGX0_BLOCK | (1ULL << 16)); nic_reg_write(nic, NIC_PF_INTF_0_1_SEND_CFG | (1 << 8), - (NIC_TNS_BYPASS_MODE << 7) | BGX1_BLOCK); + (NIC_TNS_BYPASS_MODE << 7) | + BGX1_BLOCK | (1ULL << 16)); + } else { + /* Configure timestamp generation timeout to 10us */ + for (i = 0; i < nic->hw->bgx_cnt; i++) + nic_reg_write(nic, NIC_PF_INTFX_SEND_CFG | (i << 3), + (1ULL << 16)); } nic_reg_write(nic, NIC_PF_INTF_0_1_BP_CFG, @@ -880,6 +889,44 @@ static void nic_pause_frame(struct nicpf *nic, int vf, struct pfc *cfg) } } +/* Enable or disable HW timestamping by BGX for pkts received on a LMAC */ +static void nic_config_timestamp(struct nicpf *nic, int vf, struct set_ptp *ptp) +{ + struct pkind_cfg *pkind; + u8 lmac, bgx_idx; + u64 pkind_val, pkind_idx; + + if (vf >= nic->num_vf_en) + return; + + bgx_idx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vf]); + lmac = NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vf]); + + pkind_idx = lmac + bgx_idx * MAX_LMAC_PER_BGX; + pkind_val = nic_reg_read(nic, NIC_PF_PKIND_0_15_CFG | (pkind_idx << 3)); + pkind = (struct pkind_cfg *)&pkind_val; + + if (ptp->enable && !pkind->hdr_sl) { + /* Skiplen to exclude 8byte timestamp while parsing pkt + * If not configured, will result in L2 errors. + */ + pkind->hdr_sl = 4; + /* Adjust max packet length allowed */ + pkind->maxlen += (pkind->hdr_sl * 2); + bgx_config_timestamping(nic->node, bgx_idx, lmac, true); + nic_reg_write(nic, NIC_PF_RX_ETYPE_0_7 | (1 << 3), + (ETYPE_ALG_ENDPARSE << 16) | ETH_P_1588); + } else if (!ptp->enable && pkind->hdr_sl) { + pkind->maxlen -= (pkind->hdr_sl * 2); + pkind->hdr_sl = 0; + bgx_config_timestamping(nic->node, bgx_idx, lmac, false); + nic_reg_write(nic, NIC_PF_RX_ETYPE_0_7 | (1 << 3), + (ETYPE_ALG_SKIP << 16) | ETH_P_8021Q); + } + + nic_reg_write(nic, NIC_PF_PKIND_0_15_CFG | (pkind_idx << 3), pkind_val); +} + /* Interrupt handler to handle mailbox messages from VFs */ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) { @@ -1022,6 +1069,9 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) case NIC_MBOX_MSG_PFC: nic_pause_frame(nic, vf, &mbx.pfc); goto unlock; + case NIC_MBOX_MSG_PTP_CFG: + nic_config_timestamp(nic, vf, &mbx.ptp); + break; default: dev_err(&nic->pdev->dev, "Invalid msg from VF%d, msg 0x%x\n", vf, mbx.msg.msg); diff --git a/drivers/net/ethernet/cavium/thunder/nic_reg.h b/drivers/net/ethernet/cavium/thunder/nic_reg.h index 80d46337cf29..a16c48a1ebb2 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_reg.h +++ b/drivers/net/ethernet/cavium/thunder/nic_reg.h @@ -99,6 +99,7 @@ #define NIC_PF_ECC3_DBE_INT_W1S (0x2708) #define NIC_PF_ECC3_DBE_ENA_W1C (0x2710) #define NIC_PF_ECC3_DBE_ENA_W1S (0x2718) +#define NIC_PF_INTFX_SEND_CFG (0x4000) #define NIC_PF_MCAM_0_191_ENA (0x100000) #define NIC_PF_MCAM_0_191_M_0_5_DATA (0x110000) #define NIC_PF_MCAM_CTRL (0x120000) diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c index b9ece9cbf98b..ed9f10bdf41e 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c @@ -9,12 +9,14 @@ /* ETHTOOL Support for VNIC_VF Device*/ #include +#include #include "nic_reg.h" #include "nic.h" #include "nicvf_queues.h" #include "q_struct.h" #include "thunder_bgx.h" +#include "../common/cavium_ptp.h" #define DRV_NAME "thunder-nicvf" #define DRV_VERSION "1.0" @@ -824,6 +826,31 @@ static int nicvf_set_pauseparam(struct net_device *dev, return 0; } +static int nicvf_get_ts_info(struct net_device *netdev, + struct ethtool_ts_info *info) +{ + struct nicvf *nic = netdev_priv(netdev); + + if (!nic->ptp_clock) + return ethtool_op_get_ts_info(netdev, info); + + info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE | + SOF_TIMESTAMPING_RX_SOFTWARE | + SOF_TIMESTAMPING_SOFTWARE | + SOF_TIMESTAMPING_TX_HARDWARE | + SOF_TIMESTAMPING_RX_HARDWARE | + SOF_TIMESTAMPING_RAW_HARDWARE; + + info->phc_index = cavium_ptp_clock_index(nic->ptp_clock); + + info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON); + + info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) | + (1 << HWTSTAMP_FILTER_ALL); + + return 0; +} + static const struct ethtool_ops nicvf_ethtool_ops = { .get_link = nicvf_get_link, .get_drvinfo = nicvf_get_drvinfo, @@ -847,7 +874,7 @@ static const struct ethtool_ops nicvf_ethtool_ops = { .set_channels = nicvf_set_channels, .get_pauseparam = nicvf_get_pauseparam, .set_pauseparam = nicvf_set_pauseparam, - .get_ts_info = ethtool_op_get_ts_info, + .get_ts_info = nicvf_get_ts_info, .get_link_ksettings = nicvf_get_link_ksettings, }; diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c index 21618d0d694f..881af8a120f5 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c @@ -20,11 +20,13 @@ #include #include #include +#include #include "nic_reg.h" #include "nic.h" #include "nicvf_queues.h" #include "thunder_bgx.h" +#include "../common/cavium_ptp.h" #define DRV_NAME "thunder-nicvf" #define DRV_VERSION "1.0" @@ -602,6 +604,44 @@ static inline bool nicvf_xdp_rx(struct nicvf *nic, struct bpf_prog *prog, return false; } +static void nicvf_snd_ptp_handler(struct net_device *netdev, + struct cqe_send_t *cqe_tx) +{ + struct nicvf *nic = netdev_priv(netdev); + struct skb_shared_hwtstamps ts; + u64 ns; + + nic = nic->pnicvf; + + /* Sync for 'ptp_skb' */ + smp_rmb(); + + /* New timestamp request can be queued now */ + atomic_set(&nic->tx_ptp_skbs, 0); + + /* Check for timestamp requested skb */ + if (!nic->ptp_skb) + return; + + /* Check if timestamping is timedout, which is set to 10us */ + if (cqe_tx->send_status == CQ_TX_ERROP_TSTMP_TIMEOUT || + cqe_tx->send_status == CQ_TX_ERROP_TSTMP_CONFLICT) + goto no_tstamp; + + /* Get the timestamp */ + memset(&ts, 0, sizeof(ts)); + ns = cavium_ptp_tstamp2time(nic->ptp_clock, cqe_tx->ptp_timestamp); + ts.hwtstamp = ns_to_ktime(ns); + skb_tstamp_tx(nic->ptp_skb, &ts); + +no_tstamp: + /* Free the original skb */ + dev_kfree_skb_any(nic->ptp_skb); + nic->ptp_skb = NULL; + /* Sync 'ptp_skb' */ + smp_wmb(); +} + static void nicvf_snd_pkt_handler(struct net_device *netdev, struct cqe_send_t *cqe_tx, int budget, int *subdesc_cnt, @@ -658,7 +698,12 @@ static void nicvf_snd_pkt_handler(struct net_device *netdev, prefetch(skb); (*tx_pkts)++; *tx_bytes += skb->len; - napi_consume_skb(skb, budget); + /* If timestamp is requested for this skb, don't free it */ + if (skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS && + !nic->pnicvf->ptp_skb) + nic->pnicvf->ptp_skb = skb; + else + napi_consume_skb(skb, budget); sq->skbuff[cqe_tx->sqe_ptr] = (u64)NULL; } else { /* In case of SW TSO on 88xx, only last segment will have @@ -697,6 +742,21 @@ static inline void nicvf_set_rxhash(struct net_device *netdev, skb_set_hash(skb, hash, hash_type); } +static inline void nicvf_set_rxtstamp(struct nicvf *nic, struct sk_buff *skb) +{ + u64 ns; + + if (!nic->ptp_clock || !nic->hw_rx_tstamp) + return; + + /* The first 8 bytes is the timestamp */ + ns = cavium_ptp_tstamp2time(nic->ptp_clock, + be64_to_cpu(*(__be64 *)skb->data)); + skb_hwtstamps(skb)->hwtstamp = ns_to_ktime(ns); + + __skb_pull(skb, 8); +} + static void nicvf_rcv_pkt_handler(struct net_device *netdev, struct napi_struct *napi, struct cqe_rx_t *cqe_rx, @@ -748,6 +808,7 @@ static void nicvf_rcv_pkt_handler(struct net_device *netdev, return; } + nicvf_set_rxtstamp(nic, skb); nicvf_set_rxhash(netdev, cqe_rx, skb); skb_record_rx_queue(skb, rq_idx); @@ -823,10 +884,12 @@ static int nicvf_cq_intr_handler(struct net_device *netdev, u8 cq_idx, &tx_pkts, &tx_bytes); tx_done++; break; + case CQE_TYPE_SEND_PTP: + nicvf_snd_ptp_handler(netdev, (void *)cq_desc); + break; case CQE_TYPE_INVALID: case CQE_TYPE_RX_SPLIT: case CQE_TYPE_RX_TCP: - case CQE_TYPE_SEND_PTP: /* Ignore for now */ break; } @@ -1322,12 +1385,28 @@ int nicvf_stop(struct net_device *netdev) nicvf_free_cq_poll(nic); + /* Free any pending SKB saved to receive timestamp */ + if (nic->ptp_skb) { + dev_kfree_skb_any(nic->ptp_skb); + nic->ptp_skb = NULL; + } + /* Clear multiqset info */ nic->pnicvf = nic; return 0; } +static int nicvf_config_hw_rx_tstamp(struct nicvf *nic, bool enable) +{ + union nic_mbx mbx = {}; + + mbx.ptp.msg = NIC_MBOX_MSG_PTP_CFG; + mbx.ptp.enable = enable; + + return nicvf_send_msg_to_pf(nic, &mbx); +} + static int nicvf_update_hw_max_frs(struct nicvf *nic, int mtu) { union nic_mbx mbx = {}; @@ -1397,6 +1476,12 @@ int nicvf_open(struct net_device *netdev) if (nic->sqs_mode) nicvf_get_primary_vf_struct(nic); + /* Configure PTP timestamp */ + if (nic->ptp_clock) + nicvf_config_hw_rx_tstamp(nic, nic->hw_rx_tstamp); + atomic_set(&nic->tx_ptp_skbs, 0); + nic->ptp_skb = NULL; + /* Configure receive side scaling and MTU */ if (!nic->sqs_mode) { nicvf_rss_init(nic); @@ -1823,6 +1908,73 @@ static void nicvf_xdp_flush(struct net_device *dev) return; } +static int nicvf_config_hwtstamp(struct net_device *netdev, struct ifreq *ifr) +{ + struct hwtstamp_config config; + struct nicvf *nic = netdev_priv(netdev); + + if (!nic->ptp_clock) + return -ENODEV; + + if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) + return -EFAULT; + + /* reserved for future extensions */ + if (config.flags) + return -EINVAL; + + switch (config.tx_type) { + case HWTSTAMP_TX_OFF: + case HWTSTAMP_TX_ON: + break; + default: + return -ERANGE; + } + + switch (config.rx_filter) { + case HWTSTAMP_FILTER_NONE: + nic->hw_rx_tstamp = false; + break; + case HWTSTAMP_FILTER_ALL: + case HWTSTAMP_FILTER_SOME: + case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: + case HWTSTAMP_FILTER_PTP_V2_EVENT: + case HWTSTAMP_FILTER_PTP_V2_SYNC: + case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: + nic->hw_rx_tstamp = true; + config.rx_filter = HWTSTAMP_FILTER_ALL; + break; + default: + return -ERANGE; + } + + if (netif_running(netdev)) + nicvf_config_hw_rx_tstamp(nic, nic->hw_rx_tstamp); + + if (copy_to_user(ifr->ifr_data, &config, sizeof(config))) + return -EFAULT; + + return 0; +} + +static int nicvf_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) +{ + switch (cmd) { + case SIOCSHWTSTAMP: + return nicvf_config_hwtstamp(netdev, req); + default: + return -EOPNOTSUPP; + } +} + static const struct net_device_ops nicvf_netdev_ops = { .ndo_open = nicvf_open, .ndo_stop = nicvf_stop, @@ -1836,6 +1988,7 @@ static const struct net_device_ops nicvf_netdev_ops = { .ndo_bpf = nicvf_xdp, .ndo_xdp_xmit = nicvf_xdp_xmit, .ndo_xdp_flush = nicvf_xdp_flush, + .ndo_do_ioctl = nicvf_ioctl, }; static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) @@ -1845,6 +1998,16 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct nicvf *nic; int err, qcount; u16 sdevid; + struct cavium_ptp *ptp_clock; + + ptp_clock = cavium_ptp_get(); + if (IS_ERR(ptp_clock)) { + if (PTR_ERR(ptp_clock) == -ENODEV) + /* In virtualized environment we proceed without ptp */ + ptp_clock = NULL; + else + return PTR_ERR(ptp_clock); + } err = pci_enable_device(pdev); if (err) { @@ -1899,6 +2062,7 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) */ if (!nic->t88) nic->max_queues *= 2; + nic->ptp_clock = ptp_clock; /* MAP VF's configuration registers */ nic->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); @@ -2012,6 +2176,7 @@ static void nicvf_remove(struct pci_dev *pdev) pci_set_drvdata(pdev, NULL); if (nic->drv_stats) free_percpu(nic->drv_stats); + cavium_ptp_put(nic->ptp_clock); free_netdev(netdev); pci_release_regions(pdev); pci_disable_device(pdev); diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index 14e62c6ac342..3eae9ff9b53a 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -982,6 +982,9 @@ void nicvf_qset_config(struct nicvf *nic, bool enable) qs_cfg->be = 1; #endif qs_cfg->vnic = qs->vnic_id; + /* Enable Tx timestamping capability */ + if (nic->ptp_clock) + qs_cfg->send_tstmp_ena = 1; } nicvf_send_msg_to_pf(nic, &mbx); } @@ -1389,6 +1392,29 @@ nicvf_sq_add_hdr_subdesc(struct nicvf *nic, struct snd_queue *sq, int qentry, hdr->inner_l3_offset = skb_network_offset(skb) - 2; this_cpu_inc(nic->pnicvf->drv_stats->tx_tso); } + + /* Check if timestamp is requested */ + if (!(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { + skb_tx_timestamp(skb); + return; + } + + /* Tx timestamping not supported along with TSO, so ignore request */ + if (skb_shinfo(skb)->gso_size) + return; + + /* HW supports only a single outstanding packet to timestamp */ + if (!atomic_add_unless(&nic->pnicvf->tx_ptp_skbs, 1, 1)) + return; + + /* Mark the SKB for later reference */ + skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; + + /* Finally enable timestamp generation + * Since 'post_cqe' is also set, two CQEs will be posted + * for this packet i.e CQE_TYPE_SEND and CQE_TYPE_SEND_PTP. + */ + hdr->tstmp = 1; } /* SQ GATHER subdescriptor diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c index 5e5c4d7796b8..0f23999c5bcf 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c @@ -245,6 +245,35 @@ void bgx_lmac_rx_tx_enable(int node, int bgx_idx, int lmacid, bool enable) } EXPORT_SYMBOL(bgx_lmac_rx_tx_enable); +/* Enables or disables timestamp insertion by BGX for Rx packets */ +void bgx_config_timestamping(int node, int bgx_idx, int lmacid, bool enable) +{ + struct bgx *bgx = get_bgx(node, bgx_idx); + struct lmac *lmac; + u64 csr_offset, cfg; + + if (!bgx) + return; + + lmac = &bgx->lmac[lmacid]; + + if (lmac->lmac_type == BGX_MODE_SGMII || + lmac->lmac_type == BGX_MODE_QSGMII || + lmac->lmac_type == BGX_MODE_RGMII) + csr_offset = BGX_GMP_GMI_RXX_FRM_CTL; + else + csr_offset = BGX_SMUX_RX_FRM_CTL; + + cfg = bgx_reg_read(bgx, lmacid, csr_offset); + + if (enable) + cfg |= BGX_PKT_RX_PTP_EN; + else + cfg &= ~BGX_PKT_RX_PTP_EN; + bgx_reg_write(bgx, lmacid, csr_offset, cfg); +} +EXPORT_SYMBOL(bgx_config_timestamping); + void bgx_lmac_get_pfc(int node, int bgx_idx, int lmacid, void *pause) { struct pfc *pfc = (struct pfc *)pause; diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h index 23acdc5ab896..5a7567d31138 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h @@ -122,6 +122,8 @@ #define SPU_DBG_CTL_AN_NONCE_MCT_DIS BIT_ULL(29) #define BGX_SMUX_RX_INT 0x20000 +#define BGX_SMUX_RX_FRM_CTL 0x20020 +#define BGX_PKT_RX_PTP_EN BIT_ULL(12) #define BGX_SMUX_RX_JABBER 0x20030 #define BGX_SMUX_RX_CTL 0x20048 #define SMU_RX_CTL_STATUS (3ull << 0) @@ -172,6 +174,7 @@ #define GMI_PORT_CFG_SPEED_MSB BIT_ULL(8) #define GMI_PORT_CFG_RX_IDLE BIT_ULL(12) #define GMI_PORT_CFG_TX_IDLE BIT_ULL(13) +#define BGX_GMP_GMI_RXX_FRM_CTL 0x38028 #define BGX_GMP_GMI_RXX_JABBER 0x38038 #define BGX_GMP_GMI_TXX_THRESH 0x38210 #define BGX_GMP_GMI_TXX_APPEND 0x38218 @@ -223,6 +226,7 @@ void bgx_set_lmac_mac(int node, int bgx_idx, int lmacid, const u8 *mac); void bgx_get_lmac_link_state(int node, int bgx_idx, int lmacid, void *status); void bgx_lmac_internal_loopback(int node, int bgx_idx, int lmac_idx, bool enable); +void bgx_config_timestamping(int node, int bgx_idx, int lmacid, bool enable); void bgx_lmac_get_pfc(int node, int bgx_idx, int lmacid, void *pause); void bgx_lmac_set_pfc(int node, int bgx_idx, int lmacid, void *pause); -- 2.15.1