From patchwork Tue Jan 19 00:40:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinicius Costa Gomes X-Patchwork-Id: 366756 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, USER_AGENT_GIT autolearn=ham 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 B1C74C433E0 for ; Tue, 19 Jan 2021 00:41:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 80A3223101 for ; Tue, 19 Jan 2021 00:41:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391315AbhASAl6 (ORCPT ); Mon, 18 Jan 2021 19:41:58 -0500 Received: from mga09.intel.com ([134.134.136.24]:38525 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730132AbhASAlr (ORCPT ); Mon, 18 Jan 2021 19:41:47 -0500 IronPort-SDR: NjuAKNezWHSisiPqBloH/QVjVvJSy7pbzEqV3dBBMj34Za0DBnfsXGB4QFY7w7HCMNZ8TDkfmo jLzFWQprsXuQ== X-IronPort-AV: E=McAfee;i="6000,8403,9868"; a="179011257" X-IronPort-AV: E=Sophos;i="5.79,357,1602572400"; d="scan'208";a="179011257" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2021 16:40:52 -0800 IronPort-SDR: S4iGKsAaOsLdWc2XRLltfKxhstNgKlMmycZLklh/yQrzoqvEcILovXMSZpFzANSLRnKJxuWOWn th2Ew85gOvgg== X-IronPort-AV: E=Sophos;i="5.79,357,1602572400"; d="scan'208";a="426285766" Received: from cemillan-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.212.57.184]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2021 16:40:51 -0800 From: Vinicius Costa Gomes To: netdev@vger.kernel.org Cc: Vinicius Costa Gomes , jhs@mojatatu.com, xiyou.wangcong@gmail.com, jiri@resnulli.us, kuba@kernel.org, m-karicheri2@ti.com, vladimir.oltean@nxp.com, Jose.Abreu@synopsys.com, po.liu@nxp.com, intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com, mkubecek@suse.cz Subject: [PATCH net-next v2 3/8] igc: Set the RX packet buffer size for TSN mode Date: Mon, 18 Jan 2021 16:40:23 -0800 Message-Id: <20210119004028.2809425-4-vinicius.gomes@intel.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210119004028.2809425-1-vinicius.gomes@intel.com> References: <20210119004028.2809425-1-vinicius.gomes@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for supporting frame preemption, when entering TSN mode set the receive packet buffer to 16KB for the Express MAC, 16KB for the Preemptible MAC and 2KB for the BMC, according to the datasheet section 7.1.3.2. Signed-off-by: Vinicius Costa Gomes --- drivers/net/ethernet/intel/igc/igc_defines.h | 2 ++ drivers/net/ethernet/intel/igc/igc_tsn.c | 14 ++++++++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc_defines.h b/drivers/net/ethernet/intel/igc/igc_defines.h index 32f5fd684139..0e78abfd99ee 100644 --- a/drivers/net/ethernet/intel/igc/igc_defines.h +++ b/drivers/net/ethernet/intel/igc/igc_defines.h @@ -351,6 +351,8 @@ #define IGC_RXPBS_CFG_TS_EN 0x80000000 /* Timestamp in Rx buffer */ #define IGC_TXPBSIZE_TSN 0x04145145 /* 5k bytes buffer for each queue */ +#define IGC_RXPBSIZE_TSN 0x00010090 /* 16KB for EXP + 16KB for BE + 2KB for BMC */ +#define IGC_RXPBSIZE_SIZE_MASK 0x0001FFFF #define IGC_DTXMXPKTSZ_TSN 0x19 /* 1600 bytes of max TX DMA packet size */ #define IGC_DTXMXPKTSZ_DEFAULT 0x98 /* 9728-byte Jumbo frames */ diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c index 174103c4bea6..38451cf05ac6 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -24,7 +24,7 @@ static bool is_any_launchtime(struct igc_adapter *adapter) static int igc_tsn_disable_offload(struct igc_adapter *adapter) { struct igc_hw *hw = &adapter->hw; - u32 tqavctrl; + u32 tqavctrl, rxpbs; int i; if (!(adapter->flags & IGC_FLAG_TSN_QBV_ENABLED)) @@ -35,6 +35,11 @@ static int igc_tsn_disable_offload(struct igc_adapter *adapter) wr32(IGC_TXPBS, I225_TXPBSIZE_DEFAULT); wr32(IGC_DTXMXPKTSZ, IGC_DTXMXPKTSZ_DEFAULT); + rxpbs = rd32(IGC_RXPBS) & ~IGC_RXPBSIZE_SIZE_MASK; + rxpbs |= I225_RXPBSIZE_DEFAULT; + + wr32(IGC_RXPBS, rxpbs); + tqavctrl = rd32(IGC_TQAVCTRL); tqavctrl &= ~(IGC_TQAVCTRL_TRANSMIT_MODE_TSN | IGC_TQAVCTRL_ENHANCED_QAV); @@ -64,7 +69,7 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter) { struct igc_hw *hw = &adapter->hw; u32 tqavctrl, baset_l, baset_h; - u32 sec, nsec, cycle; + u32 sec, nsec, cycle, rxpbs; ktime_t base_time, systim; int i; @@ -79,6 +84,11 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter) wr32(IGC_TXPBS, IGC_TXPBSIZE_TSN); tqavctrl = rd32(IGC_TQAVCTRL); + rxpbs = rd32(IGC_RXPBS) & ~IGC_RXPBSIZE_SIZE_MASK; + rxpbs |= IGC_RXPBSIZE_TSN; + + wr32(IGC_RXPBS, rxpbs); + tqavctrl |= IGC_TQAVCTRL_TRANSMIT_MODE_TSN | IGC_TQAVCTRL_ENHANCED_QAV; wr32(IGC_TQAVCTRL, tqavctrl);