From patchwork Fri Feb 7 16:56:44 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Abdul Rahim, Faizal" X-Patchwork-Id: 13965511 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4CB25C02194 for ; Fri, 7 Feb 2025 17:19:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Nns2pb75X82OiRUnuI2QHZ6PcDEQCoIyJJLFfE3oNG0=; b=MKSMfhiJkxwKLzYR645y6ob1j+ qzVzdSEWUTZiTkwdZlYc8P0o6pJREEYBYFh4Rvdr92m1aC9c06dOt7LN8176TGa6scDNnOe72TOu1 Kwb4Ah+iCoMOSVZ1hs42tpS8DSvHTLDWyZPvwwkGmrn0dL36QnNAZ3CAUQbPB7sqiWWUJo0byRApS VPKj7Ja6yaS1VDuMj3WlJX5NFB6GKduRwXSgsBY4hI050Pnt8YKw22605QCPBjljvQncWQa6/ny0o JotU8w/8jJALNsO/W/JhfAjzsruutSVkY/XI0fG4VqPtcBWqX0JluOsHjCXHDuf0CokeGTOHfBaNf FGJwZpdg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tgS0W-0000000AShE-2Y2X; Fri, 07 Feb 2025 17:19:12 +0000 Received: from mgamail.intel.com ([198.175.65.16]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tgRfb-0000000ANrz-3MIw for linux-arm-kernel@lists.infradead.org; Fri, 07 Feb 2025 16:57:37 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1738947456; x=1770483456; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=2Msp7YoBmanu425m0MXmljH1/c1Or8M2lkzZSA8x+50=; b=GEIcKBgatRoTiJM3DnlkFwlg542psR6Ao3yl7V9MH8g+DjnnDsHR5y8Z DR2zDzEB3VEdNH2bkyDdfPMUnjgpCX3wXV1e3cOo/clZAuld31y8D3zgC RJNzTOuHpNoSksdFwo/CZgcJdIM1yTHFSeGOTgA7MUMBEKxd0Ac8FRhoU s96ceukUx58+EaFhOxaXRbcipQvP7XtoJ77wGvuvQaDfuY7ohuI6QbHqt qpOwdsNTTQ5kbLwceh80sDIBycBVu0BexA5ihjqylXg04iaGvYqlvqWu4 WSnDOCpP2YL7v/0f9e3kQkz/fTou7ws+0KxFbVqPtcMox9TUW8pgvoLA0 g==; X-CSE-ConnectionGUID: XD2PaEEjSE+AM8FYXiexWQ== X-CSE-MsgGUID: OUfrjg6iQCG6Szd8WnEw7Q== X-IronPort-AV: E=McAfee;i="6700,10204,11338"; a="39722948" X-IronPort-AV: E=Sophos;i="6.13,267,1732608000"; d="scan'208";a="39722948" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Feb 2025 08:57:36 -0800 X-CSE-ConnectionGUID: PZJIpWyVRA+0JIxlRWHxig== X-CSE-MsgGUID: YFpvCDh6S+uRlVpJfaMrgQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.13,267,1732608000"; d="scan'208";a="111534559" Received: from mohdfai2-ilbpg12-1.png.intel.com ([10.88.227.73]) by orviesa006.jf.intel.com with ESMTP; 07 Feb 2025 08:57:27 -0800 From: Faizal Rahim To: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexandre Torgue , Simon Horman , Russell King , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Furong Xu <0x1207@gmail.com>, Russell King , Vladimir Oltean , Serge Semin , Xiaolei Wang , Suraj Jaiswal , Kory Maincent , Gal Pressman , Jesper Nilsson , Andrew Halaney , Choong Yong Liang , Faizal Rahim , Kunihiko Hayashi , Vinicius Costa Gomes , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, bpf@vger.kernel.org Subject: [PATCH iwl-next v3 4/9] igc: Set the RX packet buffer size for TSN mode Date: Fri, 7 Feb 2025 11:56:44 -0500 Message-Id: <20250207165649.2245320-5-faizal.abdul.rahim@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250207165649.2245320-1-faizal.abdul.rahim@linux.intel.com> References: <20250207165649.2245320-1-faizal.abdul.rahim@linux.intel.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250207_085735_875672_662D5ED2 X-CRM114-Status: GOOD ( 12.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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. Co-developed-by: Vinicius Costa Gomes Signed-off-by: Vinicius Costa Gomes Signed-off-by: Faizal Rahim --- drivers/net/ethernet/intel/igc/igc_defines.h | 3 +++ drivers/net/ethernet/intel/igc/igc_tsn.c | 13 +++++++++++-- 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 516ef70c98e9..b19ac6f30dac 100644 --- a/drivers/net/ethernet/intel/igc/igc_defines.h +++ b/drivers/net/ethernet/intel/igc/igc_defines.h @@ -402,6 +402,9 @@ /* 7KB bytes buffer for each tx queue (total 4 queues) + 4KB for BMC*/ #define IGC_TXPBSIZE_TSN 0x041c71c7 +/* 15KB for EXP + 15KB for BE + 2KB for BMC */ +#define IGC_RXPBSIZE_TSN 0x0000f08f +#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 1e44374ca1ff..f0213cfce07d 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -132,13 +132,17 @@ static int igc_tsn_disable_offload(struct igc_adapter *adapter) { u16 queue_per_tc[4] = { 3, 2, 1, 0 }; struct igc_hw *hw = &adapter->hw; - u32 tqavctrl; + u32 tqavctrl, rxpbs; int i; wr32(IGC_GTXOFFSET, 0); 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); + if (igc_is_device_id_i226(hw)) igc_tsn_restore_retx_default(adapter); @@ -194,7 +198,7 @@ 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; @@ -202,6 +206,11 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter) wr32(IGC_DTXMXPKTSZ, IGC_DTXMXPKTSZ_TSN); wr32(IGC_TXPBS, IGC_TXPBSIZE_TSN); + rxpbs = rd32(IGC_RXPBS) & ~IGC_RXPBSIZE_SIZE_MASK; + rxpbs |= IGC_RXPBSIZE_TSN; + + wr32(IGC_RXPBS, rxpbs); + if (igc_is_device_id_i226(hw)) igc_tsn_set_retx_qbvfullthreshold(adapter);