From patchwork Fri Dec 23 11:09:28 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13080884 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 D6D80C4167B for ; Fri, 23 Dec 2022 11:10:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236111AbiLWLKC (ORCPT ); Fri, 23 Dec 2022 06:10:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229658AbiLWLKA (ORCPT ); Fri, 23 Dec 2022 06:10:00 -0500 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B2F62708; Fri, 23 Dec 2022 03:09:58 -0800 (PST) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 2BNB9XGD044123; Fri, 23 Dec 2022 05:09:33 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1671793773; bh=ubDG4WCRNYleiVwKG/9I8i06Y0Ga/hIKm87LALUcyqo=; h=From:To:CC:Subject:Date; b=A2we3eKJM1A4avcx47GykmudA6gb9Y1aWJ6Vg+HIIo+sSjbHQHTgOkN0QjdnzbrUc Tz3fVJaFcnjhpQlJYlolVUFJ9Y87E1PmNqdey8HlaK/7pdXXABBDI87jUbqFkYJHs9 ugIZ2P/3Tg43jw15ugGqdd/xrD18YkvCcpdnSkxM= Received: from DLEE112.ent.ti.com (dlee112.ent.ti.com [157.170.170.23]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 2BNB9XHU115576 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 23 Dec 2022 05:09:33 -0600 Received: from DLEE103.ent.ti.com (157.170.170.33) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Fri, 23 Dec 2022 05:09:32 -0600 Received: from fllv0040.itg.ti.com (10.64.41.20) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Fri, 23 Dec 2022 05:09:32 -0600 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 2BNB9WfC058705; Fri, 23 Dec 2022 05:09:32 -0600 Received: from localhost (a0501179-pc.dhcp.ti.com [10.24.69.114]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 2BNB9VOu001006; Fri, 23 Dec 2022 05:09:32 -0600 From: MD Danish Anwar To: "Andrew F. Davis" , Tero Kristo , Suman Anna , Roger Quadros , YueHaibing , MD Danish Anwar , "Vignesh Raghavendra" , Krzysztof Kozlowski , Rob Herring , "Paolo Abeni" , Jakub Kicinski , Eric Dumazet , "David S. Miller" , CC: , , , , , , , Subject: [PATCH v3 0/2] Introduce ICSSG based ethernet Driver Date: Fri, 23 Dec 2022 16:39:28 +0530 Message-ID: <20221223110930.1337536-1-danishanwar@ti.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The Programmable Real-time Unit and Industrial Communication Subsystem Gigabit (PRU_ICSSG) is a low-latency microcontroller subsystem in the TI SoCs. This subsystem is provided for the use cases like the implementation of custom peripheral interfaces, offloading of tasks from the other processor cores of the SoC, etc. The subsystem includes many accelerators for data processing like multiplier and multiplier-accumulator. It also has peripherals like UART, MII/RGMII, MDIO, etc. Every ICSSG core includes two 32-bit load/store RISC CPU cores called PRUs. The above features allow it to be used for implementing custom firmware based peripherals like ethernet. This series adds the YAML documentation and the driver with basic EMAC support for TI AM654 Silicon Rev 2 SoC with the PRU_ICSSG Sub-system. running dual-EMAC firmware. This currently supports basic EMAC with 1Gbps and 100Mbps link. 10M and half-duplex modes are not yet supported because they require the support of an IEP, which will be added later. Advanced features like switch-dev and timestamping will be added later. This series depends on two patch series that are not yet merged, one in the remoteproc tree and another in the soc tree. the first one is titled Introduce PRU remoteproc consumer API and the second one is titled Introduce PRU platform consumer API. Both of these are required for this driver. To explain this dependency and to get reviews, I had earlier posted all three of these as an RFC[1], this can be seen for understanding the dependencies. The two series remoteproc[2] and soc[3] have been posted seperately to their respective trees. This is the v3 of the patch series [v1]. This version of the patchset addresses the comments made on [v2] of the series. Changes from v1 to v2 : *) Addressed Rob and Krzysztof's comments on patch 1 of this series. Fixed indentation. Removed description and pinctrl section from ti,icssg-prueth.yaml file. *) Addressed Krzysztof, Paolo, Randy, Andrew and Christophe's comments on patch 2 of this seires. *) Fixed blanklines in Kconfig and Makefile. Changed structures to const as suggested by Krzysztof. *) Fixed while loop logic in emac_tx_complete_packets() API as suggested by Paolo. Previously in the loop's last iteration 'budget' was 0 and napi_consume_skb would wrongly assume the caller is not in NAPI context. Now, budget won't be zero in last iteration of loop. *) Removed inline functions addr_to_da1() and addr_to_da0() as asked by Andrew. *) Added dev_err_probe() instead of dev_err() as suggested by Christophe. *) In ti,icssg-prueth.yaml file, in the patternProperties section of ethernet-ports, kept the port name as "port" instead of "ethernet-port" as all other drivers were using "port". Will change it if is compulsory to use "ethernet-port". It is a good idea to mention this in the change history. It is then clear you have considered it, but decided against it. [1] https://lore.kernel.org/all/20220406094358.7895-1-p-mohan@ti.com/ [2] https://patchwork.kernel.org/project/linux-remoteproc/cover/20220418104118.12878-1-p-mohan@ti.com/ [3] https://patchwork.kernel.org/project/linux-remoteproc/cover/20220418123004.9332-1-p-mohan@ti.com/ [v1] https://lore.kernel.org/all/20220506052433.28087-1-p-mohan@ti.com/ [v2] https://lore.kernel.org/all/20220531095108.21757-1-p-mohan@ti.com/ Thanks and Regards, Md Danish Anwar Puranjay Mohan (1): dt-bindings: net: Add ICSSG Ethernet Driver bindings Roger Quadros (1): net: ti: icssg-prueth: Add ICSSG ethernet driver .../bindings/net/ti,icssg-prueth.yaml | 174 ++ drivers/net/ethernet/ti/Kconfig | 13 + drivers/net/ethernet/ti/Makefile | 2 + drivers/net/ethernet/ti/icssg_classifier.c | 368 ++++ drivers/net/ethernet/ti/icssg_config.c | 440 ++++ drivers/net/ethernet/ti/icssg_config.h | 200 ++ drivers/net/ethernet/ti/icssg_ethtool.c | 320 +++ drivers/net/ethernet/ti/icssg_mii_cfg.c | 104 + drivers/net/ethernet/ti/icssg_mii_rt.h | 151 ++ drivers/net/ethernet/ti/icssg_prueth.c | 1882 +++++++++++++++++ drivers/net/ethernet/ti/icssg_prueth.h | 246 +++ drivers/net/ethernet/ti/icssg_switch_map.h | 183 ++ include/linux/pruss.h | 1 + 13 files changed, 4084 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/ti,icssg-prueth.yaml create mode 100644 drivers/net/ethernet/ti/icssg_classifier.c create mode 100644 drivers/net/ethernet/ti/icssg_config.c create mode 100644 drivers/net/ethernet/ti/icssg_config.h create mode 100644 drivers/net/ethernet/ti/icssg_ethtool.c create mode 100644 drivers/net/ethernet/ti/icssg_mii_cfg.c create mode 100644 drivers/net/ethernet/ti/icssg_mii_rt.h create mode 100644 drivers/net/ethernet/ti/icssg_prueth.c create mode 100644 drivers/net/ethernet/ti/icssg_prueth.h create mode 100644 drivers/net/ethernet/ti/icssg_switch_map.h