From patchwork Thu Mar 17 18:51:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Horatiu Vultur X-Patchwork-Id: 12784487 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 5127CC433F5 for ; Thu, 17 Mar 2022 18:49:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237594AbiCQSum (ORCPT ); Thu, 17 Mar 2022 14:50:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52212 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237584AbiCQSul (ORCPT ); Thu, 17 Mar 2022 14:50:41 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A366514964C; Thu, 17 Mar 2022 11:49:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1647542964; x=1679078964; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=ZmwolZ5iOd/9V4MN6DapEmj7rhiSSyG/Olfb51uk8Nk=; b=P2FE7yt0lsG78FVzk+y0JJV83P6YNuMRk2OeIijCX/br6YUpfFvq5Sb4 wHqUSAsrr//Mkwqvw/t0uZdkSOQrSx4qheBsu+Qb2Owsx0d5IIJZSb0zy GjR6by5YXKG4Ud6NdOqjx5M7W4sx4rNKEx/W0rStLFoATWMRKOBnWJvBP ivl25OYn3BbkNNSdTtevvb1v85oE4ESi24RVU3BfYXqTx0HkVoENg3eUt CvcptiUffaObytPWJ2AC41Cb+PPCHR/ph59mnFIt4zko61z6MCjASvMvS MVcNYq2lillaQ0t3VARlsNiXTZ6Rr9C29YkQC8PapPwL6dGu86CCmmA8u g==; X-IronPort-AV: E=Sophos;i="5.90,188,1643698800"; d="scan'208";a="89304216" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa6.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 17 Mar 2022 11:49:23 -0700 Received: from chn-vm-ex01.mchp-main.com (10.10.85.143) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Thu, 17 Mar 2022 11:49:23 -0700 Received: from soft-dev3-1.microsemi.net (10.10.115.15) by chn-vm-ex01.mchp-main.com (10.10.85.143) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Thu, 17 Mar 2022 11:49:21 -0700 From: Horatiu Vultur To: , , CC: , , , , Horatiu Vultur Subject: [PATCH net-next 0/5] net: lan966x: Add support for FDMA Date: Thu, 17 Mar 2022 19:51:54 +0100 Message-ID: <20220317185159.1661469-1-horatiu.vultur@microchip.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Currently when injecting or extracting a frame from CPU, the frame is given to the HW each word at a time. There is another way to inject/extract frames from CPU using FDMA(Frame Direct Memory Access). In this way the entire frame is given to the HW. This improves both RX and TX bitrate. Horatiu Vultur (5): dt-bindings: net: lan966x: Extend with FDMA interrupt net: lan966x: Add registers that are used for FDMA. net: lan966x: Expose functions that are needed by FDMA net: lan966x: Add FDMA functionality net: lan96x: Update FDMA to change MTU. .../net/microchip,lan966x-switch.yaml | 2 + .../net/ethernet/microchip/lan966x/Makefile | 2 +- .../ethernet/microchip/lan966x/lan966x_fdma.c | 772 ++++++++++++++++++ .../ethernet/microchip/lan966x/lan966x_main.c | 44 +- .../ethernet/microchip/lan966x/lan966x_main.h | 120 +++ .../ethernet/microchip/lan966x/lan966x_port.c | 3 + .../ethernet/microchip/lan966x/lan966x_regs.h | 106 +++ 7 files changed, 1037 insertions(+), 12 deletions(-) create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_fdma.c